3patti sign-in: separate access from account recovery
Signing in involves identifying the right account, protecting credentials and understanding the response. When access fails, isolate the cause rather than opening another account.

Three different stages of access
Check whether the form requests a username, email address or phone number. Even a correct password will not match the wrong identifier. Review old saved details before using them.
Check letter case, keyboard language and unintended spaces. Repeated guesses can trigger temporary limits. Use the intended recovery process when you are unsure of the password.
A successful password check may lead to additional verification. This is different from an incorrect-password message. Follow the displayed instructions without sharing a verification code.

Personal devices and shared devices need different choices
Autofill can help on a personal device, but check the destination before allowing it to enter credentials. Update an outdated saved password. Changing a browser entry does not change the password held by a service.
Avoid persistent sign-in and password storage on someone else's device. Sign out when finished. Closing a browser tab does not necessarily end the session.
Choose the response that matches the symptom
For an identifier error, use the type of identity requested by the form. Do not guess another person's account. Earlier confirmation messages may help you identify your own account details.
For recovery, confirm control of your own email or phone. Inspect the destination before opening a recovery link. After setting a new password, update any old saved entry.
If access looks unfamiliar, change the password from a trusted device. Review and end sessions if the service provides that control. Record the time and symptoms for a useful support report.
Isolate a sign-in problem
Check the address
Open the known destination yourself to exclude an incorrect page.
Check the identifier
Match the requested identity with your saved details.
Read the result
Distinguish password failure, code requests and temporary limits.
Use recovery
Complete the intended recovery through a contact method you control.
Questions about Sign-in
Where do I enter my password here?
This explanation page has no password field. Do not email a password either.
Does closing a tab sign me out?
Not always. Use the service's sign-out control on shared devices.
Can I reuse an earlier code?
An earlier code may expire after a replacement is requested. Follow the current instructions.
What if attempts keep failing?
Stop guessing, record the exact error and use the relevant recovery or help process.