Oh man, I thought you were more experienced with these things. Do you know how bad a decision it is to receive the payment from the signature campaign directly to the exchange wallet? Especially if it is from a mixer signature.
Do you know that they can suspend your account because of "tainted" coins?
I completely agree, many try to reduce transaction fees, especially since the weekly amount is low, but this may lead to closing your account and losing your entire investment, so it is better to give a wallet address where you can access the private key.
@KingsDen Contact the support team. Perhaps your balance will be updated once the total of your deposits is greater than 0.0005, or in other words, ask them: If I deposit more than the minimum, will the previous transaction appear or will it be considered a donation?