IMAP password incorrect.

Check to make sure that you have entered your password in the incoming mail server setting in your account. Go to Settings>Passwords & Accounts>Your e-mail account>Account>Incoming Mail Server Setting. Make sure that the password is correctly entered in that setting.

You should try to recover your password through your email provider. Contact them for help or use whatever means they provide to reset a password.

Have checked imap password and tried many but have forgotten it. How do I solve this