Earn coins at a party not working right

This last two weekends during the “tournament”, when I choose Earn Coins at a Party, I click a bunch of vending machines, I only get about $750 for each machine… (when I click one, I can see the ‘$5000’ or whatever float up to the top but it only gives me credit for aprox. $750 in the challenge) before I would choose about 20 to 22 vending machines it would give me average $63,000 coins to easily complete the task, now, the last two tournaments I clicked all 35 of my machines and only got about $26,000, I needed $35k to complete the task, is anyone else having this issue?