Hi, I'm Sandy and I look forward to help you today.
I'm sorry about the issue.
Can you please tell me if you email address ends with @gmail.com or other?
Have you tried to reset the email account password? If yes, what error message do you get?
Optional: May I connect with you remotely(over secure network session) to check/fix the issue directly?
Secure Remote support($9) can save a lot of time. I will fix the issue while you stay in front of your computer. It is 100% safe and secure.