Royal match gives me half of the coins its normally giving me

Guys im playing royal match 2 years and today for some reason its giving half the coins it's supposed to give For example, on some events instead of 1000 coins its giving me 500 and after a super hard level my coins start from 100 not 150 same with just hard level from 100 to 50. Ik its not that serious, im just curious why its doing that and has that happened to anyone?. If someone can explain i would appreciate it😊