Amazfit Watch faces

Hello,
I have: Amazfit GTS 2, ZEPP App, AmazFaces App.
I want: install a GTS 2 watch face from the Amazfaces App via ZEPP App.
Problem: I doesn’t install / appear in ZEPP app or on the GTS 2 watch.
What do I make wrong?
Thank you!!
Best, Andy

Hello! Sorry for asking, but I didn’t find a related topic for my question:

I am searching for watch faces for my GTS 2 model. Can I use the GTS watch faces too or is there a difference? Can that cause problems inside the GTS 2 system?

Thank you in advance.