3.11 still does not work with Bluetooth

Bluetooth still does not work with Zoiper. It is garbled and unusable. Tried all variations of audio settings (echo cancellation on-off, etc) with no change. Its a decent app in a field of bad iOS SIP clients, so maybe one day it will work again with a headset - just like the icon!

cftc about Zoiper Lite voip soft phone, v3.11