diff --git a/app/controllers/api/v1/reports_controller.rb b/app/controllers/api/v1/reports_controller.rb
index 052d70cc8d..8ff6c8fe5c 100644
--- a/app/controllers/api/v1/reports_controller.rb
+++ b/app/controllers/api/v1/reports_controller.rb
@@ -10,9 +10,7 @@ class Api::V1::ReportsController < Api::BaseController
     @report = ReportService.new.call(
       current_account,
       reported_account,
-      status_ids: reported_status_ids,
-      comment: report_params[:comment],
-      forward: report_params[:forward]
+      report_params
     )
 
     render json: @report, serializer: REST::ReportSerializer
@@ -20,14 +18,6 @@ class Api::V1::ReportsController < Api::BaseController
 
   private
 
-  def reported_status_ids
-    reported_account.statuses.with_discarded.find(status_ids).pluck(:id)
-  end
-
-  def status_ids
-    Array(report_params[:status_ids])
-  end
-
   def reported_account
     Account.find(report_params[:account_id])
   end
diff --git a/app/controllers/api/v1/statuses_controller.rb b/app/controllers/api/v1/statuses_controller.rb
index eaac8e5636..ddd7c33ae4 100644
--- a/app/controllers/api/v1/statuses_controller.rb
+++ b/app/controllers/api/v1/statuses_controller.rb
@@ -94,8 +94,9 @@ class Api::V1::StatusesController < Api::BaseController
   end
 
   def set_thread
-    @thread = status_params[:in_reply_to_id].blank? ? nil : Status.find(status_params[:in_reply_to_id])
-  rescue ActiveRecord::RecordNotFound
+    @thread = Status.find(status_params[:in_reply_to_id]) if status_params[:in_reply_to_id].present?
+    authorize(@thread, :show?) if @thread.present?
+  rescue ActiveRecord::RecordNotFound, Mastodon::NotPermittedError
     render json: { error: I18n.t('statuses.errors.in_reply_not_found') }, status: 404
   end
 
diff --git a/app/javascript/styles/mastodon/admin.scss b/app/javascript/styles/mastodon/admin.scss
index ea9d04e82a..73414785c2 100644
--- a/app/javascript/styles/mastodon/admin.scss
+++ b/app/javascript/styles/mastodon/admin.scss
@@ -904,6 +904,14 @@ a.name-tag,
   text-align: center;
 }
 
+.applications-list__item {
+  padding: 15px 0;
+  background: $ui-base-color;
+  border: 1px solid lighten($ui-base-color, 4%);
+  border-radius: 4px;
+  margin-top: 15px;
+}
+
 .announcements-list {
   border: 1px solid lighten($ui-base-color, 4%);
   border-radius: 4px;
diff --git a/app/javascript/styles/mastodon/forms.scss b/app/javascript/styles/mastodon/forms.scss
index 6e02e2332b..90d56b0759 100644
--- a/app/javascript/styles/mastodon/forms.scss
+++ b/app/javascript/styles/mastodon/forms.scss
@@ -1069,6 +1069,7 @@ code {
 
     &:last-child {
       border-bottom: 0;
+      padding-bottom: 0;
     }
   }
 }
diff --git a/app/services/report_service.rb b/app/services/report_service.rb
index caf99ab6e0..9d784c341a 100644
--- a/app/services/report_service.rb
+++ b/app/services/report_service.rb
@@ -6,10 +6,10 @@ class ReportService < BaseService
   def call(source_account, target_account, options = {})
     @source_account = source_account
     @target_account = target_account
-    @status_ids     = options.delete(:status_ids) || []
-    @comment        = options.delete(:comment) || ''
-    @category       = options.delete(:category) || 'other'
-    @rule_ids       = options.delete(:rule_ids)
+    @status_ids     = options.delete(:status_ids).presence || []
+    @comment        = options.delete(:comment).presence || ''
+    @category       = options.delete(:category).presence || 'other'
+    @rule_ids       = options.delete(:rule_ids).presence
     @options        = options
 
     raise ActiveRecord::RecordNotFound if @target_account.suspended?
@@ -26,7 +26,7 @@ class ReportService < BaseService
   def create_report!
     @report = @source_account.reports.create!(
       target_account: @target_account,
-      status_ids: @status_ids,
+      status_ids: reported_status_ids,
       comment: @comment,
       uri: @options[:uri],
       forwarded: forward?,
@@ -56,6 +56,10 @@ class ReportService < BaseService
     !@target_account.local? && ActiveModel::Type::Boolean.new.cast(@options[:forward])
   end
 
+  def reported_status_ids
+    @target_account.statuses.with_discarded.find(Array(@status_ids)).pluck(:id)
+  end
+
   def payload
     Oj.dump(serialize_payload(@report, ActivityPub::FlagSerializer, account: some_local_account))
   end
diff --git a/app/views/admin/trends/links/index.html.haml b/app/views/admin/trends/links/index.html.haml
index e05f877b09..6f090df7b0 100644
--- a/app/views/admin/trends/links/index.html.haml
+++ b/app/views/admin/trends/links/index.html.haml
@@ -1,6 +1,10 @@
 - content_for :page_title do
   = t('admin.trends.links.title')
 
+%p= t('admin.trends.links.description_html')
+
+%hr.spacer/
+
 = form_tag admin_trends_links_path, method: 'GET', class: 'simple_form' do
   - Trends::PreviewCardFilter::KEYS.each do |key|
     = hidden_field_tag key, params[key] if params[key].present?
diff --git a/app/views/admin/trends/links/preview_card_providers/index.html.haml b/app/views/admin/trends/links/preview_card_providers/index.html.haml
index 13c279b533..222ff6bda0 100644
--- a/app/views/admin/trends/links/preview_card_providers/index.html.haml
+++ b/app/views/admin/trends/links/preview_card_providers/index.html.haml
@@ -1,6 +1,10 @@
 - content_for :page_title do
   = t('admin.trends.preview_card_providers.title')
 
+%p= t('admin.trends.preview_card_providers.description_html')
+
+%hr.spacer/
+
 .filters
   .filter-subset
     %strong= t('admin.tags.review')
@@ -14,7 +18,6 @@
       = fa_icon 'chevron-left fw'
       = t('admin.trends.links.title')
 
-
 %hr.spacer/
 
 = form_for(@form, url: batch_admin_trends_links_preview_card_providers_path) do |f|
diff --git a/app/views/admin/trends/statuses/_status.html.haml b/app/views/admin/trends/statuses/_status.html.haml
index c99ee5d60e..edb27b9ff5 100644
--- a/app/views/admin/trends/statuses/_status.html.haml
+++ b/app/views/admin/trends/statuses/_status.html.haml
@@ -22,6 +22,9 @@
     - if status.language.present?
       •
       = standard_locale_name(status.language)
+    - if status.trendable? && !status.account.discoverable?
+      •
+      = t('admin.trends.statuses.not_discoverable')
     - if status.trendable? && (rank = Trends.statuses.rank(status.id))
       •
       %abbr{ title: t('admin.trends.tags.current_score', score: Trends.statuses.score(status.id)) }= t('admin.trends.tags.trending_rank', rank: rank + 1)
diff --git a/app/views/admin/trends/statuses/index.html.haml b/app/views/admin/trends/statuses/index.html.haml
index 3166bc6c11..c96f4323a9 100644
--- a/app/views/admin/trends/statuses/index.html.haml
+++ b/app/views/admin/trends/statuses/index.html.haml
@@ -1,6 +1,10 @@
 - content_for :page_title do
   = t('admin.trends.statuses.title')
 
+%p= t('admin.trends.statuses.description_html')
+
+%hr.spacer/
+
 = form_tag admin_trends_statuses_path, method: 'GET', class: 'simple_form' do
   - Trends::StatusFilter::KEYS.each do |key|
     = hidden_field_tag key, params[key] if params[key].present?
diff --git a/app/views/admin/trends/tags/index.html.haml b/app/views/admin/trends/tags/index.html.haml
index 3433b8dd4c..ac9bf91db6 100644
--- a/app/views/admin/trends/tags/index.html.haml
+++ b/app/views/admin/trends/tags/index.html.haml
@@ -1,6 +1,10 @@
 - content_for :page_title do
   = t('admin.trends.tags.title')
 
+%p= t('admin.trends.tags.description_html')
+
+%hr.spacer/
+
 .filters
   .filter-subset
     %strong= t('admin.tags.review')
diff --git a/app/views/oauth/authorized_applications/index.html.haml b/app/views/oauth/authorized_applications/index.html.haml
index fead56f4ae..0280d8aef8 100644
--- a/app/views/oauth/authorized_applications/index.html.haml
+++ b/app/views/oauth/authorized_applications/index.html.haml
@@ -5,9 +5,9 @@
 
 %hr.spacer/
 
-.announcements-list
+.applications-list
   - @applications.each do |application|
-    .announcements-list__item
+    .applications-list__item
       - if application.website.present?
         = link_to application.name, application.website, target: '_blank', rel: 'noopener noreferrer', class: 'announcements-list__item__title'
       - else
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 5ce43be1ab..6a55941858 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -777,6 +777,7 @@ en:
       links:
         allow: Allow link
         allow_provider: Allow publisher
+        description_html: These are links that are currently being shared a lot by accounts that your server sees posts from. It can help your users find out what's going on in the world. No links are displayed publicly until you approve the publisher. You can also allow or reject individual links.
         disallow: Disallow link
         disallow_provider: Disallow publisher
         shared_by_over_week:
@@ -788,14 +789,17 @@ en:
       pending_review: Pending review
       preview_card_providers:
         allowed: Links from this publisher can trend
+        description_html: These are domains from which links are often shared on your server. Links will not trend publicly unless the domain of the link is approved. Your approval (or rejection) extends to subdomains.
         rejected: Links from this publisher won't trend
         title: Publishers
       rejected: Rejected
       statuses:
         allow: Allow post
         allow_account: Allow author
+        description_html: These are posts that your server knows about that are currently being shared and favourited a lot at the moment. It can help your new and returning users to find more people to follow. No posts are displayed publicly until you approve the author, and the author allows their account to be suggested to others. You can also allow or reject individual posts.
         disallow: Disallow post
         disallow_account: Disallow author
+        not_discoverable: Author has not opted-in to being discoverable
         shared_by:
           one: Shared or favourited one time
           other: Shared and favourited %{friendly_count} times
@@ -808,6 +812,7 @@ en:
           tag_servers_dimension: Top servers
           tag_servers_measure: different servers
           tag_uses_measure: total uses
+        description_html: These are hashtags that are currently appearing in a lot of posts that your server sees. It can help your users find out what people are talking the most about at the moment. No hashtags are displayed publicly until you approve them.
         listable: Can be suggested
         not_listable: Won't be suggested
         not_trendable: Won't appear under trends
diff --git a/spec/controllers/api/v1/reports_controller_spec.rb b/spec/controllers/api/v1/reports_controller_spec.rb
index a13de13706..b5baf60e11 100644
--- a/spec/controllers/api/v1/reports_controller_spec.rb
+++ b/spec/controllers/api/v1/reports_controller_spec.rb
@@ -13,22 +13,64 @@ RSpec.describe Api::V1::ReportsController, type: :controller do
   end
 
   describe 'POST #create' do
-    let(:scopes)  { 'write:reports' }
-    let!(:status) { Fabricate(:status) }
-    let!(:admin)  { Fabricate(:user, admin: true) }
+    let!(:admin) { Fabricate(:user, admin: true) }
+
+    let(:scopes) { 'write:reports' }
+    let(:status) { Fabricate(:status) }
+    let(:target_account) { status.account }
+    let(:category) { nil }
+    let(:forward) { nil }
+    let(:rule_ids){ nil }
 
     before do
       allow(AdminMailer).to receive(:new_report).and_return(double('email', deliver_later: nil))
-      post :create, params: { status_ids: [status.id], account_id: status.account.id, comment: 'reasons' }
+      post :create, params: { status_ids: [status.id], account_id: target_account.id, comment: 'reasons', category: category, rule_ids: rule_ids, forward: forward }
     end
 
-    it 'creates a report' do
-      expect(status.reload.account.targeted_reports).not_to be_empty
+    it 'returns http success' do
       expect(response).to have_http_status(200)
     end
 
+    it 'creates a report' do
+      expect(target_account.targeted_reports).to_not be_empty
+    end
+
+    it 'saves comment' do
+      expect(target_account.targeted_reports.first.comment).to eq 'reasons'
+    end
+
     it 'sends e-mails to admins' do
       expect(AdminMailer).to have_received(:new_report).with(admin.account, Report)
     end
+
+    context 'when a status does not belong to the reported account' do
+      let(:target_account) { Fabricate(:account) }
+
+      it 'returns http not found' do
+        expect(response).to have_http_status(404)
+      end
+    end
+
+    context 'when a category is chosen' do
+      let(:category) { 'spam' }
+
+      it 'saves category' do
+        expect(target_account.targeted_reports.first.spam?).to be true
+      end
+    end
+
+    context 'when violated rules are chosen' do
+      let(:rule) { Fabricate(:rule) }
+      let(:category) { 'violation' }
+      let(:rule_ids) { [rule.id] }
+
+      it 'saves category' do
+        expect(target_account.targeted_reports.first.violation?).to be true
+      end
+
+      it 'saves rule_ids' do
+        expect(target_account.targeted_reports.first.rule_ids).to match_array([rule.id])
+      end
+    end
   end
 end
diff --git a/spec/fabricators/rule_fabricator.rb b/spec/fabricators/rule_fabricator.rb
index 4bdfd05e0e..bc29bc48e1 100644
--- a/spec/fabricators/rule_fabricator.rb
+++ b/spec/fabricators/rule_fabricator.rb
@@ -1,5 +1,5 @@
 Fabricator(:rule) do
-  priority   ""
-  deleted_at "2021-02-21 05:51:09"
-  text       "MyText"
-end
\ No newline at end of file
+  priority   0
+  deleted_at nil
+  text       { Faker::Lorem.paragraph }
+end