What to record
Keep the device model, Android version, app version, destination and exact message. A short, accurate sequence is more useful to support than repeated attempts without notes.
Trouble signing in? Work through these checks
Four checks before another attempt
A login error is easier to investigate when you keep the steps separate.
Confirm the provider first
Verify that the destination is linked to the provider that issued your account. If it is unfamiliar, confirm it before entering credentials.
Look at the username and keyboard
Check spaces, case and keyboard language. Do not keep guessing when the service shows a lockout or recovery message.
Separate a connection issue from an account issue
Check whether other pages load normally. Note whether the problem appears before submitting the login or after the service responds.
Use the right recovery route
The account provider controls recovery. This website has no account database. Do not send passwords, banking details or verification codes to an unexpected contact.
Where to continue
If the destination is confirmed, review the supplied login link. If the problem is about installing a file rather than signing in, use the Android walkthrough.