I've no problem using BT wifi on my device (Nook BNTV400) so why is the app not available for that device? It's not like the nook is proprietory, everything else I've tried to find in the play store works fine.
Is the apk available for download direct from bt?
Welcome to this user forum.
I don`t know the reason, but its not available from BT, but you may find someone who has the apk file for you to try.
if you can connect to btwifi without the app then I wouldn't bother trying to find the apk file
if you have an android smartphone then you can download the app and get the apk file to sideload on to your nook