pop-up saying that my password doesnt work.

Perhaps you could share the error message. Verbatim please. We know only what you tell us, the less you offer in the way of specific details the more guessing goes on.

I suddenly can't access email server - see attached error message

@Contact443 If the above information does not resolve your issue, you should consider [/questions/new creating a new thread] with specific details about your issue. Doing so will allow support forum volunteers to give you solutions that are more helpful to you. See the [[Mozilla Support rules and guidelines]] for more information about posting support requests. When posting a question, it’s helpful to include things like: * Your operating system (see instruction for [https://learn.microsoft.com/en-us/windows/client-management/client-tools/windows-version-search Windows]/[https://support.apple.com/en-us/109033 macOS]) * Your Firefox version ([[Find what version of Firefox you are using]]) * Any specific error messages you’re seeing * The steps you've already tried to solve the issue Thank you.