You can remove passwords currently stored. Then, when prompted, you could enter what you may have as the correct one. Removing passwords stored can be done by these steps: - settings>Privacy&security - click 'saved passwords', then 'show passwords' - then highlight the two rows for the account, rightclick and delete.

Now, when prompted for password, enter the correct one. If you receive an error message for incorrect password, then what you have is the wrong one. If the error message indicates it is an incorrect password or something else, then the password issue may be irrelevant.