Rowenta01 = Dumper?
This is me, and the block explorer bug .. I have not sold any DeepOnion!
I had mistakenly given a Novaexchange address, and my account still has a balance of 1373 DeepOnion. I wanted to change the address to put it on my wallet that stake but I could not, it was too late, I was enrolled with this address ...
But the blockchain explorer says the opposite ... I had the same problem with another currency crypto.

My friend this is sad to know how really happened. The blockexplorer has no bug.
This is why never use for airdrop a wallet address from an exchange because it is the exchange admin that is in control.
And once the exchange admin moved your coins from the wallet you provided for airdrop that is subject for airdrop violation.
The balance we see in exchange are numbers provided by exchange but not what is in wallet.
It is important you found out this soon maybe there exists a fix. However this I'm not so sure.
It is unfortunate for some people why they use the address from exchanges as their airdrop address. The very disadvantage from this way is that you have no total control of the exchange address even though it is tied to your account in the exchange.
In all the times, the best way to store your coins, to receive from airdrops, as well as for staking them, is by having your own wallet. Use the addresses from your wallet for bounty, and airdrop purposes. Activate coin control for you to be majority in control of your addresses in your wallet.