THIS IS VERY URGENT - ACTION IS REQUIRED PLEASE

I have been having this problem since mid July.

I sent an email and then I decided to change my actual email address from *** Email address is removed for privacy *** to *** Email address is removed for privacy *** and since then I have been receiving an error message saying 'there seems to be a problem with outlook' but lately it has logged me into the Microsoft Account - Account Summary

But i can't get into my emails i.e I can't view my inbox etc.

I need this revolved ASAP because I use this email address for business purposes.

Kind regards

Mr A. Singh