When you send from WEX it will give you the the transaction ID under the Transaction History button, if it's there then the problem is not on WEX. Check a few block explores for that ID.

I have transactions this week from the wallets on my PC that don't show up on block explorers until after the 1st. confirmation.
The BTC network is not going so well, 250,000 transaction backlog.

https://bitcointalk.org/index.php?topic=2542462.0