It seems coinpot.co is "randomly" cancelling withdrawals when the quantity is bigger than the average, or even suspending accounts. I did not have this problem but I'm still thinking about coinpot.co is a very sophisticated psicologicaly-minded SCAM, starting in not provably fair multiplier, continuing with unsustainable VIP rewards and ending with the exploding high price of BTC. Good words from them, many people talking (good) about it, but an obscure evil inside... only my opinion.