Meaning of low API solve rate


I setup a “managed” Turnstile with auto-submit callback.

  1. User clicks action button
  2. I run managed Turnstile widget
  3. When completed (either automaticly or with user interaction) JS callback automaticity submit the form
  4. Process done.

So in my scenario when a user submit the form, and if Turnstile successfull, I always have to get it to my backend side. But my project’s “Visitor Solve Rate” is 82.38% and “API Solve Rate” 64.33%.
What should I understand from here? Aren’t my API solve rate should match with visitor solve rate?