Have change the batteries several times to make sure that wasn't causing the issue.

Initially I paired the controller with the ADT-1 then had to turn it off from the power point when at the network selection screen after selecting a language. At that point there wasn't an issue at all, just needed to change HDMI ports.

Now when I turn the ADT-1 on the controller won't pair. I read somewhere that an update causes an issue but it couldn't have updated as I never entered a WiFi password.

Tried doing a hardware reset but no luck.