Ancient coin and Annie problem

Annie and ancient coin are not working well. I know its not just i visual bug because i don't the the gold income from the coins. It looks like only some of the blue coins are having the problem. Picture 1 I can't get the coin. Picture 2 is about 10 sec after and i cant pick up the same coin or a new one that spawned. Picture 1- https://www.pinterest.com/pin/717268678124326313/ Picture 2- https://www.pinterest.com/pin/717268678124326317/

I may be wrong but i'm just trying to help. Thanks for your time :)