I am using the version of f-droid which I think will not be different from the ones on playstore. The app works very well with android but has some behavior that is puzzling the user when he tries to insert the memorized password. First, you have to get used to select by hand the right password because “paths” are normally not significant (android…something, often non unique but fruit of the system interacting with the app). So once you select the right password, you are presented with the option to insert via Authpass. But… the insertion in the namefield often does not give result, even if it is a webpage (and not an app) so that you need to click on password field in the webpager, are presented with the selection authpass but then when you try to select this popup field you often are back to the main app. Same proceedure as before. This is mainly because the timeout for webpage is extremely short (I am using fingerprint unlocking of authpass although I think this should not be related). If(!) you are fast enough, and(!) you know it works well only selecting the password field and not the user one, you have it working. With the time this gets a kind of science (seems like reading John Sutherland repairing his machine), but my 2 cents is that it should be a bit more intuitive. The timeout to select the authpass popup should be longer, the insertion should take place correctly no matter if password or user field are selected.
There are other quirks but what comes to my mind prominently when I think of a new user installing this program is exactly the above.
Hope that helps to some extend.