Please visit our bug report site to see if the problem has already been reported: msft.it/6014boMEj. You can upvote if the issue hasn't been resolved. If you think you've found a new bug, visit our help site here on how to submit a report! msft.it/6015boMEd ^AC
For assitance with email changes please send us an email at msft.it/6012bozhY and we will assist. Remember to attach your Transaction ID and account name / Gamertag. ^AC
You don't need to fill out everything and can put N/A on the request however technical assistance such as this does need to go through our ticketing system so our tech support agents can take a look at this for you ^AC