When I deleted the app the phone asked to delete all related data and I did.
I deleted the old and the new bluetooth pairing in my settings.
I restarted the phone, opened the Autel app without the BT506 on so it would not pair, and the app still asked for the old pairing number.
Paired the new BT506 and still the app asked for the old number.
I'm sure I' just missing something simple but I can't figure it out.
The new BT506 paired fine with my Maxisys Ultra and it had also been pared with the old BT506.