Do you have an external wallet? They can be a bit funny about straight to vendor addresses. The BTC address is a LB transax address generated for the order if I’m not mistaken. I’ve heard of others banned from CB for this reason. Coinbase actually have a wallet app you can install. You can link the two and send coin to your wallet. That way it’s a personal address as opposed to Transax. Then forward to the LB address from there. I may be talking absolute bollox but that’s what I do. Never been an issue. There are other wallets available. Cake etc.