Surprisingly very low withdrawal fee and confirmation is very slow
My advice should raise fees
Also having that issue with BTC withdraws not confirming for 12+ hours because the actual fee 0.0000373 is less than recommended minimum - while the user pays 0.0002 BTC for some reason.
I'm sure that is just a mistake, it's not like they would get rich from making a couple cents here and there.
Looks like btc network was overloaded that time. All the transactions were created normally like always but still they took much more time to confirm. From our side we already increased tx fee so this issue looks fixed now. Currently all that transactions already have >100 confirmations. Apologies for inconvenience you may have because of btc blockchain.