The Settings and Diagnostics tabs keep the plugin set up your way and running smoothly. Settings holds everything you choose once; Diagnostics checks your site and your browser for you.
Where to find it:

Open AI Video, then Settings or Diagnostics. At the top of Settings, a status line shows how many AI keys are connected, which AI writes your scripts and which engine draws slide pictures. Below it, links jump to each section: AI keys, What each AI does, Defaults, Free picture engines, AI usage, Brand Kit (with PRO), Appearance, Storage and Licence.
The Settings sections:

- Your AI keys: one card each for OpenAI (ChatGPT), Anthropic Claude and Google Gemini. See Connecting AI (Optional Bring Your Own Key).
- What each AI does: who writes, a backup, a soft budget, the picture engine and the Animated Story limit. See AI Usage, Fallback Provider And Monthly Budget.
- Defaults: the Theme, Format and Voice every new video starts with. You can still change them on each video.
- Free picture engines: one key box per free engine, plus ideas for working without AI images. See Image Engines, Free Options And Image Fit.
- AI usage: every AI job with an estimated cost.
- Brand Kit (PRO): your logo, its position and size.
- Appearance: the colour scheme for the ResultsAiX Video screens.
- Storage Clean Up: finds media files no video uses any more.
- License: your activation for this site. See License, Updates And Troubleshooting.
Click Save Settings at the bottom to keep your changes. Licence actions apply at once.
Appearance:

Pick a Color scheme from the menu or click a swatch: Follow the ResultsAiX Hub, WordPress Native, Results Amber (default), Clean White, Ivory Cream, Snow Light, Developer Dark, Midnight Blue, Ocean Blue, Sunset Warm or Rose Pink. It previews at once. Click Save Settings to keep it. Every ResultsAiX plugin shares the same schemes, so you can match them all.
Storage Clean Up:

Every narration clip and image is saved to your Media Library. Deleted videos, and images or clips you made again, leave old files behind.
- Click Scan For Unused Files. The result shows how many ResultsAiX Video files were found, how many are in use and how many are unused, with their size.
- Click the amber Delete Unused Files button to free the space.
The clean up checks again at the moment you click, and only removes files that no saved video uses: slide clips and images, backgrounds, music and Animated Story pictures and clips are all kept.
Diagnostics:

The Diagnostics tab shows a check for each of these, with a green tick when all is well:
- PHP version, WordPress version and OpenSSL (key encryption).
- License and License server reachable.
- Image service reachable and Module quarantine.
- Voice and video engines: a reminder to use desktop Chrome or Edge for generating and exporting.
- Core version, PRO upgrade and AI Assistant.
- Image engine and Videos saved.
- With PRO: Music server: manifest, Music server: track download and Music cache (uploads/rav-music).
The Error Log:
Under the checks, the Error Log keeps 7 days of problems on your own server, in plain words. Problems, Never finished and Everything filter it, Download .txt saves it for support, and Clear empties it. Keys and private links are never written to it.
Audio Pipeline Debug:

Click Run Audio Debug to test every step your narration goes through, right in your browser: the MP4 audio encoder, the Voice Engine app (if it is open), a test upload to your site and back, and the browser voice. Each line says PASS or FAIL. Take a screenshot of the box for support.
A real example:
Yoursite Studio sets its Defaults to Ink and Amber, Landscape 16:9 and Heart (US Female), so every new video starts in the house look. After a month of tests, Scan For Unused Files reports 64 files, 58 in use and 6 unused (865 KB), and one click clears them.
Good defaults:
- Theme: the look you use most, so new videos start on brand.
- Format: Landscape 16:9 if most videos go on YouTube or your pages, Vertical 9:16 if most go on Reels and Shorts.
- Voice: the voice you use most. You can pick any other voice on each video.
Tips:
- Run Storage Clean Up after deleting test videos, especially on smaller hosting plans.
- Diagnostics is the first place to look if something behaves unexpectedly.
- A PRO template can be your Default theme too.