I transferred $500 worth of BTC from Coinbase to an online casino. No problems.
After several weeks of gambling, with a $48 profit, I withdrew the funds into my Coinbase BTC account.
I received a Warning notice from Coinbase saying that I need to use the correct network or I could lose my funds.
However, there were no options available when I made the transfer.
It's been several days, and all the money has been withdrawn from my online casino account, but I didn't receive it in my Coinbase account.

I've never experienced this before. Is this new?

https://postimg.cc/JtvgzRVJ