Password rejected
Check spelling and stored records before using the actual service's recovery route.
Start by identifying the correct service. Check the domain in a bookmark and avoid rushing through links received in messages. A similar-looking page can collect private credentials. The address matters more than a familiar design.
For a password error, check keyboard language, letter case and unintended spaces. A password manager may contain an older record. Repeated guesses can hide the original issue. Stop if you cannot establish that the account is yours.
A successful login means the relevant service has accepted a session. Avoid retaining that session on a shared device. Sign out when finished and check for saved credentials. Articles on this website can be read without signing in.
Different symptoms need different checks; changing a password is not the answer to every failure.
Check spelling and stored records before using the actual service's recovery route.
Check the destination, message folders and the time of the latest request.
An unfamiliar session may require verification; never approve a request you did not initiate.

You need control of the contact method used for recovery. Losing an old email may require an alternative process offered by the relevant service. Buying an account or borrowing another person's identity does not resolve the underlying problem.
Compare unexpected login messages with your own activity. Open the service through a known address rather than the message link. If exposure is suspected, secure your email first because it may receive recovery messages.
Compare the domain with the service you intended to use.
Record whether the issue concerns a password, code or page loading.
Use recovery for credentials and browser checks for loading problems.
Check whether access was accepted; report the error text if unresolved.
This is a help page and does not contain a working account form.
No. Describe the error and time without passwords or one-time codes.
Stop guessing and verify the account and recovery route.
End the session, remove saved credentials and use your own device for any password change.