Amazfit Watch faces

You are right, I'm not happy either.

You can only keep one for now. If you want other watchfaces, download and install from amazfitwatchfaces.com

Amazfit official overpromise that at least 100 official watchfaces will be ready by end of July but looks how many we got now.

1. Download the custom dial(bin file) and save it in your phone.
2. Go to Amazfit app to synchronize one of an official dial.
3. In your phone, open "Files" and browse "On My iPhone > Amazfit > watchSkin”
4. Find and open the folder (official dial you just synced), there is a bin file inside and an ...

Hmm.. you can't find this folder /Android/data/com.huami.watch.hmwatchmanager/files/watch_skin_local ? Do you have another storage like SD card installed on the phone? Perhaps the folder in the other storage?

I don't think there is stair climbed stats in GTR

Yes

Sync and install an official watch face from the app first.