My first guess would be to confirm that your tags are really of type 12 and 52.
For example, I don't have any tags of those types, so I can't select anything if I try to install your app and it looks just like your dialog.
You might try changing those to a larger set of types. For example, the types of tags that can beep are:
var beeper = <#Tag to beep_[12|13|21|26]_1#>;
My tags (all of type 21) then show up if I make that change.
Looking at moved() and detected(), neither are supported for type 52.
moved() works with 12|13|21.
detected() works with 72|26|Nest.
Perhaps you want opened() and closed()? They work with 12|13|21|52.
Good luck and report back if you learn anything.
Brian