Since the last update coins bet is no real bet any more and you cant lose coins. But the game still says you need 25 coins to start a game for Quick Match and 50 for pro.
Ther is no need to own coins now.
On 4th of october i wrote an email to the Bugs adress but I still got no reply.
I also wrote another Mail the same day about another bug.
Last time I got a response within a day. You got that Mails?