Incorrect identifier
Check extra spaces, spelling and keyboard language. If password visibility is available, use it only in private.

Returning to an account requires the right address and identifier. A failed sign-in, forgotten password and unexpected verification message are different problems. Use the guidance for your particular situation.
Follow the error wording. Changing many settings at once makes it difficult to identify what helped.
Check extra spaces, spelling and keyboard language. If password visibility is available, use it only in private.
An old tab may have an expired session after a long break. Save necessary information and reopen the correct address.
Do not share a code when you have not tried to sign in. Check the security of the related email and device first.

Creating another account with the same identity is not a substitute for password recovery. Use the relevant service's genuine recovery option. Check the message address and request time.
A recovery link is sensitive. Do not publish it in a screenshot or forward it. Close old tabs after completion and sign out on shared devices.
This is an information page with no password submission form. Before entering credentials elsewhere, establish the address and service identity. Do not assume similarly named sites share accounts.
Repeated failures can cause temporary restrictions. Follow any waiting instructions in the error. Check the identifier and recovery process rather than retrying blindly.
After signing in, check that the displayed account details are familiar. Stop sensitive actions if changes look unfamiliar. Record the time, device and visible message when seeking security help.
Start from a known address and check its spelling.
Check the identifier and mistyped characters.
If forgotten, follow the genuine recovery process.
If unresolved, retain the time and error wording.
No. Stop after repeated failures, check the inputs and follow displayed instructions.
Consider it only on a secured personal device. Do not save it on public or borrowed devices.
No. Use an OTP or recovery code only in the relevant genuine process.
Stop, secure your email, use the genuine password change route and read the security guidance.