I can't register more than one device on the BT TV app. Following the instructions to play a film etc. , doesn't work.
What doesn't work @RegT ? Does the video play? If so, then the device is registered - nothing more needed.
The video doesn't work. I just get returned to device management, where there are two boxes, one occupied by my mobile and the other free.
It's the BT TV app where the problem is. BT Sport app works fine on the (new) tablet.
When you say the other is free, does the message in the box say "Once you watch a title on another device, it'll appear here"? Or "You can register a new device every 30 days"?
The message at the top of the list should indicate your current account state - whether a device can be registered now, or you need to wait a while for the device slot to become free.
It says " you can register a new device every 30 days". I've been trying for longer than that.
Unfortunately accounts do occasionally get stuck thinking they're still within the device replacement window and need to be manually reset. I'll send you a DM - keep an eye out for the envelope icon in the top right corner of this window, and reply to my message with the details requested.
...and the message at the top says all I have to do is play any film or TV show and it will appear in your list. Except I just get returned to the same page when I try this. Going round in circles!