<p>See our <a href="https://www.bt.com/help/broadband/bt-cloud/getting-set-up/download-or-access-files/how-do-i-download-files--folders-and-devices-from-bt-cloud-">help page</a> for further information.</p>
AJ910 means no TV subscription was found on the BT ID or EE ID you logged in with. Check out the instructions in this article to make sure you're the account holder, not account manager:
If you don't get anywhere with that, email me at tv.apps@ee.co.uk and I'll investigate further - don't forget to put in the email your BT account number and the BT ID or EE ID you're trying to log in with.