Amazfit GTS 2 heart tracking problem

Hi. I recentrly changed from Amazfit Bip S to an Amazfit GTS 2 Mini with Notify & Fitness App.
I haven’t been able to get heart rate data in Sleep as Android with the same settings as before. I do get HR in N&F at night, but not in SasA app. With my previous Amazfit I was getting almost flawless results. I synced my new watch with the app of course, with no problems except por this integration problem.

Any ideas?


Steps to reproduce:

Version of Sleep as Android: