Bluetooth resistance problems


I have a issue with the Elite Drivo,

When using the device on my iPad the resistance becomes extremely easy on the flat and even in my hardest gear, with trainer difficulty set to 100% I will be doing 110rpm 300W

When reaching a hill the resistance goes to the opposite end of the spectrum and become impossible to turn the gears! So I then have to change the trainer difficulty. Even the the resistance seems all over the place.

When on windows and using ant+ it work flawlessly. Hill and resistance changes are as expected, resistance set around 40%.

Wondering if it’s a bug on the iOS app?

Have you heard of this before?

Any suggestions?