If Curve has lost transaction of your cross asset swap, do not panic, there is a simple way to recover it.
Visit your address on Etherscan and click on ERC721:
And then click on your latest cross-asset swap, you should find a long string of numbers like below:
Enter your token id found on Etherscan, enter your the token you would like to receive (if your token has sBTC then it must be a Bitcoin token that shares a pool with sBTC, if your token is sUSD, it should be a token that shares a pool with sUSD) and then click recover.
Confirm your transaction and you're done.