How to re-set up my website's email's Outlook password?

When I set up WordPress on my GoDaddy website finestc.com , I followed the instructions (I think) to set up email deliveries to Microsoft Outlook. That seemed to work, and I recall even getting a test message through and reading it on Outlook.

Now I can’t get into Outlook at all. When I launch it, it comes up with the correct email address, and asks for my password, as I expected. I type in the password I thought I had set, and it goes away fro a moment and then comes back to ask me for the password again, as though I’d typed the wrong password. And again, and again ad infinitum

I’ve tried every password I’ve ever used. None of them work.

How do I tell Outlook (or WordPress or whomever) that I want to set a new password?

Or, how do I re-setup the entire finestc.com email so that I can use POP mail and read it with my normal yahoo.com mail system?

Thanks all. Forgive me for asking a question that has probably been asked a hundred times, but I couldn’t find an example in this forum.