It turns out that Bittrex changed their withdrawal policy without notifying its users. Now a withdrawal must be verified by email before it is authorized. Before a withdrawal was just processed and a confirming email was sent. After I verified my withdrawals they were processed no problem.
People are having their accounts disabled on Bittrex but my withdrawal problem has gone away once I figured out the process change.
Here's a good article for further information:
https://steemit.com/bitcoin/@mooncryption/bittrex-and-bitfinex-rapidly-closing-down-user-accounts
image: pixabay
