1P8 - Autofill stops without 1P7 accessibility turned on

Hi @darrenk thanks for adding those details. If it's okay with you, lets focus on the phone for now as an external keyboard may add an extra layer of confusion while we look into this.

With 1Password 7, do you have "Always show Autofill suggestions below fields" on in Settings > Autofill? If so, that would explain why you're seeing suggestions below fields. Turning the setting off should return suggestions to the keyboard.

With Autofill on in 1Password 8 and Accessibility on in 1Password 7, you will see competing suggestions as accessibility filling is outside the Autofill service. As you're seeing both it does suggest that 1Password 8 Autofill is working on your device.

This leaves the fourth point. On your Samsung phone I'd like to ask you to switch to Gboard, confirm Autofill and Accessibility are off in 1Password 7 and that Autofill is on in 1Password 8. Next you can open Chrome and navigate to fill.dev login > simple or open the link below. When you tap the username field do you see a prompt in the suggestion strip? If not, close Chrome completely and reopen the browser then try tapping the username field again. Let us know how that goes!
* https://fill.dev/form/login-simple