Why is NiceHash wallet not in sync with blockchain?

NiceHash wallet is not a blockchain wallet, but a regular wallet that uses certain defined Bitcoin address for deposits.

If you check this Bitcoin address on blockchain you will see that the transactions do not match the ones being executed in your NiceHash wallet. This is because we do not issue blockchain transactions for internal moves of coins (mining payments and order payments) because each blockchain transaction requires certain amount of TX fee and several minutes or hours for confirmation while our internal transactions are completely free and instant. Therefore, it does not make sense to use blockchain transactions for our internal accounting.