Lost equipment /progress issue

Lately,I ran into an equipment missing issue and it confused me for a while.I bought an equipment for 1.4k gems and it disappeared and I’m not sure if there were any other items i lost because i can’t remember it now.But I do recall that I logged on the app on iPad (unsynced steps) and then when l logged onto the iPhone version this thing happened.So I’m wondering if there is a bug that caused this equipment or program missing and i want my compensation due to the money i put in.
Thank you!