Amber Nadeau
they expire in 1 year of earning the coin, if u don't redeem them. it says it under ur profile when ur coins are expiring, if any. hope this helps!
Over the 2 years I have had this app I have earned 5190 coins and I have not used any of them and my coin balance has went from 5190 to 869 in matter of
Days so if anyone else has had this happen to them and got it to stop please comment on this post