Amazfit Watch faces

There is a way to install custom watch faces on the T-Rex 2. I asked Amazefit on Facebook about people making custom faces for it and their reply back was that they have an open source option in the works but no date on when it will be available and made a post on Reddit to let others know about ...

I tried to use amazefitwatches app didn’t helped me. Got a T Rex 2 too