As of right now everytime my game reconnects I get my gems back. This is also working for people in my clan but try it yourself! Use gems then exit the app for 5 minutes then get back on. It should give you your gems back.
I am the original founder of this glitch all credit goes to me!
I am the original founder of this glitch all credit goes to me!
P.S. You have to wait for 5 minutes.