Check if this is your btc address you actually entered - https://xchain.io/address/1KToXJ1PiA4NU6wR5FFHwHfAY4NJKw5T1E
I think you deposited .483 Ether, which at 1 Eth - 601.08 NVST conversion rate you should have received about 290.32 NVST. This address has 290.3193