Error: “You’re currently signed in with an Office 365 email account, which can’t be used with Outlook.com” when signing in

Having the same problem as everyone else really, I have tried all of the suggestions for private browsing and signing in on another browser/computer etc in the other thread, not sure how to go forward now apart from taking the advice to post here.

How do I give my email to the moderators through the 'private message area'? Didn't completely understand this, and cant see any links? would appreciate the help since it is my university email and is pretty urgent for me.

thanks

regards,

Rosemarie