Install watchface on Amazfit GTR
Hello and Welcome,
Facer watch faces are compatible with Wear OS and Tizen, and iOS watches.
*Facer Supports: Asus ZenWatch, Asus ZenWatch 2, Asus ZenWatch 3, Apple Watch, Fossil Q Crewmaster, Fossil Q Founder, Fossil Q Founder 2.0, Fossil Q Wander, Fossil Q Marshal, LG G Watch, LG G Watch R, Casio WSD-F10RG, Casio Pro TREK Smart, LG Watch Urbane, LG G Watch R, LG Urbane LTE, LG Watch Style, LG Watch Sport, LG Watch Urbane Luxe, Moto 360, Moto 360 2015, Moto 360 Womens’s, Moto 360 Sport, Huawei Watch, Huawei Watch Women’s, Samsung Gear Live, Samsung Gear S2, Samsung Gear S3, Sony SmartWatch 3, TAG Heuer Connected, Polar M 600, Nixon Mission, Michael Kors Access Touch Dylan, Michael Kors Accss Touch Bradshaw, New Balance RunIQ."
It appears that your Amazfit is not compatible.