Thanks for all the comments and suggestions!
I just forwarded this to my team so it can be considered

You should really hire better team.
I was kicked out of site 2 times while playing slots and received "Bad Gateway" message.
Also, I received some strange error messages many times in the middle of game.
I don't know is it my connection or not but while playing Space Invasion my balance was going up/down before reals stopped spinning. Not cool at all, I don't think anyone want to know result before end, there is no excitement in knowing result before game finishes.
Most important, consider to change MD5 to provably fair(client seed + server seed + nonce)
Overall, site has potential and games are unique - but it needs corrections.