You should select the watch face you see in Zepp’s online watch face instructions. The watch face image you want to set is where it won’t appear on the watch face when you tap online watch faces. It will appear directly on your watch. You can definitely do it!
Supported Android

{5.0 and UP}
Supported Android version:-
Lollipop (5.0–5.0.2) – Marshmallow (6.0 – 6.0.1) – Nougat (7.0 – 7.1.1) – Oreo (8.0-8.1) – Pie (9.0)

Download GTS WatchFaces for Amazfit GTS Pro 2.15.1 APK for Android

GTS_v2.15.1_Pro_encrypt2.apk