Same issue here!
Is this beta version will delete my presets on iPad?
Hi Guys, we realized there is a Bluetooth connection issue due to iOS 13 changes the way how the Background Mode works. There will be a production release which solves this problem. But for now, you can join our beta and download the version that fixes this temporarily.
Here is the version you can update (you need to install TestFlight on your iOS devices first): https://testflight.apple.com/join/rTMrrvEQ