1.21.1.0 windows10 - now crashes if bluetooth switched on when clicking devices to connect - does not crash with bluetooth switched off but corrupt devices page and cannot search for ant+

1.21.1.0 windows10 - now crashes if bluetooth switched on when clicking devices to connect - does not crash  with bluetooth switched off but corrupt devices page and cannot search for ant+ 

I've repaired the app same problem

I've reset the app same problem

I've uninstalled and reinstalled and same problem 

Any one else experiencing the same ?? as now the app is completely useless