As I said above, Blockchain.info's fee estimation is far from accurate and it'll likely make your transaction stucked particularly if the network is busy which is currently happening now.

Anyways, Viabtc has a limit of 100 transactions per hour and since this has a high demand, The slots might get taken in just a few minutes so you have to submit your TXID once an hour starts XX:00:00. You can use our forum time (top right)