Microsoft word account conflicts

I purchased this service using Gmail account and I want to use it in Microsoft word which is logged in under my Hotmail account. for some reason it seems that there are two separate accounts in proofread bot website for both emails, one for Gmail with the purchased 5 million words, and the other for Hotmail without the service. I tried to connect Hotmail to the Gmail account under the identities tab, but it says I cannot since "someone else registered the Hotmail account".
can you please help me as the due date for my submission is approaching in two days.
thanks

Type: 
General
Status: 
Closed (fixed)