Where do I find my saved password for Blink?

Update on an earlier posting by someone else. I have the same problem with the fully updated iPhone 14 Pro. E.g my Blink application will sign me in which means it has the password stored somewhere but that password appears nowhere in the passwords or passkeys on the iPhone. I need it to get on Blink and change some contact data but there’s no way to access it on the iPhone 14 Pro apparently.

I have many apps and none of them appear in passwords or passkey and yet they all have passwords and they’re all logging in, so, where are those passwords for the apps stored? I see people or AIs have responded with infuriating “did you Check passwords and passkeys?”

It’s there somewhere in some hidden file at some hidden level but where? Also, phone will log me in to an app with password but when I try to call up the password so that at least copy it. It will not call it up, but it’s there somewhere. That happens with most of the Apple Store apps. BMUG Original User. Apple Transparency ever more opaque.

[Re-Titled by Moderator]