You pay a moderate fee, but due to the current time there are too many transactions, so you need to wait a while! Maybe in about 3 days, your transaction will be successful! I think so!
True,when i try to check the fee of that transaction its really just decent but seeing on the current state of the blockchain network it would really takes time to confirm and as others said boosting up that tx thru viabtc would do but be sure you are fast enough because theres limitation on how many tx can they accumulate on particular time.