I keep receiving a server error every time I attempt to collect one of my free wishes. I finally got a Hero and Misfit wish and can’t use them. I did put in a ticket. Just wondering if anyone else has this issue.
I had this problem too…
When I did use the “free” wish, it ended up using my coins instead. My guess is if you have enough coins, it will just purchase the wish for you.
I have no idea if I got a free wish out of it, but I didn’t notice it was using my coins until it started to give an error when trying to use a “free” one. About 2400 coins gone 
Definitely put in a ticket (if you haven’t already) and we can investigate for you. Support can assist if needed.
www.d3go.com/mobile-games-support
Thanks!
Look like this is fixed and they refunded gold coins for coins that were spent on “free” wishes.
Thanks!