Urgent quick master master replication fix

I experiencing a MYSQL ERROR on a master master replication . Following error: Last_IO_Errno: 1045 Last_IO_Error: error connecting to master 'replication@[login to view URL]' - retry-time: 60 retries: 86400 I have tried to shortend the [login to view URL] no luck I believe i have messed up the permissions for user replication but not sure. FIXED PRICE 30USD User must also explain what he did eventual a simple notepad document with what he did. user must be able to communicate via chat and work through teamviewer would be essential.