Choose the identifier
Match the name or contact used at registration. A display nickname is not always a login identifier.
Returning to an account requires the correct identifier, password and a known address. Separate the causes of failed access to avoid repeating the same mistake. This page does not contain a login form.

Identify the layer involved when access fails. The identifier, entered details and previous session state may have different causes.
Match the name or contact used at registration. A display nickname is not always a login identifier.
Check keyboard language, capitalisation and extra spaces. Be mindful of nearby people before revealing a password.
Log out on a shared device when finished. Closing the browser does not always end a session.
Start from your own bookmark and check the spelling.
Enter the correct identifier and record the exact error if access fails.
Distinguish incorrect identity, an expired session and an instruction to wait.
If the password is forgotten, follow a genuine recovery route instead of continuing to guess.
A login problem does not necessarily mean an account is lost. Expired sessions, incorrect identifiers and interrupted connections have different symptoms. Identifying the stage at which a message appears makes the next action clearer.
A password manager may contain several similarly named addresses. Check which domain the autofilled entry belongs to. Confirm that replacement details work before updating an old saved entry.
Recovery is a separate security process. If control of a contact method is lost, do not buy codes or let a stranger remotely control your phone. Follow the genuine service's written instructions about required evidence.
If a code or password-change message arrives unexpectedly, do not follow its link. Check separately through a known address and secure the related contact account too.
Respect any instruction to pause further attempts. Rapid retries from different devices can make the cause harder to understand.
Check the keyboard, spaces and correct saved entry. Use recovery if a careful attempt still fails.
The previous access session has ended. A new sign-in through a known route may be needed.
Avoid saved passwords and automatic access, then log out.
Stop the process, change the related password and seek help with a record of unusual activity.