When I try to activate Settings | Autofill | Accessibility, I get an error message of "Manual Configuration Required. This setting can't be configured automatically. You will need to configure it manually from the Settings app".
Within Android Settings, I search for anything related to Autofill and/or Accessibility, and only get the 'Autofill Service' where 1Password is already the 'Autofill service'.
I cannot find where, or what, this manual configuration option within the Settings app is or required.
1Password Version: 7.3.4
Extension Version: Not Provided
OS Version: Android 9 (Pie)
Sync Type: Not Provided