iOS Settings > Passwords > Password Options
Make sure “AutoFill Passwords” is enabled and you’ve selected the correct password manager app.
Discussion
Keychain was not selected 🤔 and I never changed anything. Thank you. Works now. 
iOS Settings > Passwords > Password Options
Make sure “AutoFill Passwords” is enabled and you’ve selected the correct password manager app.
Keychain was not selected 🤔 and I never changed anything. Thank you. Works now.