pop3 Email account not shown after quick setup

Hello,

Pop3 Email account set up but not seen.....How do I get past the big blue Accounts screen to use email that I set up?

I did a quick set up on a pop3 mail account in WIN 10. It is nowhere to be seen and only the blue colored Accounts screen is visible. I can set up more email accounts but can't use them. ?? If I try to set up the email account again (quick or manually) I get "account already exists". I'm stuck at the main blue colored set up screen. Since the email app won't actually load I can not get to the account settings to modify or delete the mail account to start over with a new setup. Anybody seen this before? How do I get past the big blue Accounts screen to use email that I set up? Thanks.