You can't mine to a wallet at Cryptopia. They require a payment ID, which pools do not use with payment sends. Cryptopia provides a warning in quite a few places:

"WARNING! Please do not mine to your Cryptopia addresses, We do not support transactions from pools like P2Pool etc."

Edit: Sorry, I thought you were sending from a mining pool. These are from regular wallets, and you used the payment ID Cryptopia provided you with? Last time I sent BIP to that exchange it took quite awhile to show up, but not that long. That was sent at 216,231.