To ensure the more security Kucoin made the feature is annoying. For example putting trading password in every trade or to withdraw money. I think email verification to withdraw money is enough. Trading pass, two wallets, these are really very weird to me.
And the worthless thing is asking KYC to change the trading password. Which is not expecting from Kucoin.
Every exchange has its own way to protect its member's account, I have one exchange where you need three kinds of verification before they allow you to withdraw your account like email, text, and 2FA.
I'm glad that OP has resolved the issue, I'm also trading on Kucoin to make it easy I have the last 6 digits of one of the phones as my trading password and no one among my relatives and phones know the number of my phone it's the one phone I use for verification.