I read somewhere that crypto.com haulted all the withdrawals so probably they are compensating with that by offering 0% commission for the trades?
I don't think it's the compensation for the halting of withdrawals as they've already refunded those and OP said that he's been doing a 0% fee for the past month, but I think if they do that, it's not a big loss for them to compensate those affected users.
There is 0% withdrawal and trading fee if I hold their coin? Where does it say this?
So if I buy $100,00 BTC on Crypto.com app, there is 0% commission fee?
It's on the fees limits link, you should see how much discount you have depending on how much cro you hold/staking.