Robinhood failing on refunds of WETH

I accidentally sent Wrapped Ether to my Robinhood account. Yes, I know—don’t do that! I have learned my lesson.

They’ve apparently tried to refund me to my external wallets, and both of their attempts have failed. These are two different wallets on Ethereum that both support the token.

The support person I just spoke with said it was because they/the system thought it was sending to a Robinhood wallet? Needless to say, I’m very confused, and I’m not getting anywhere.

What may be making these refunds fail? Any experience getting this done successfully?