If you're seeing demo mode only, that likely means you're signing in with the wrong credentials. Check this faq out to see if it assists in this matter: msft.it/6015bWDOS for help. ^TK
Then you're going to need to send a new ticket. Please send us an email at msft.it/6017bW8eR and we will assist. Remember to attach your Transaction ID and account name / Gamertag. ^TK
Do you happen to have the ticket number? If you are waiting for a reply we're a bit backed up at this time due to account migration so give it some time. ^TK
Alright, so it's likely the wrong credentials are being used. Check out this demo faq to see if it assists, if not I'll escalate you: msft.it/6016bmhvO for help. ^TK