KuCoin: I know, crap Chinese site though it does give access to offload oddball coins, forks etc that are otherwise difficult to get rid of. Just a caution for any other poor sod with equity parked there.
Having converted a bunch of accumulated forks/good and crap icos/penny coins into ETH over the past month I made a withdrawal on KuCoin yesterday to zero my account; today still no luck and ended up on a rather tedious chat with 'customer support' requesting a screenshot of my withdrawal application to 'review my situation'; I didn't have a screenshot and never needed one before either on KuCoin or anywhere else after the confirmation email, but she insisted my withdrawal cannot be processed without a screenshot.
Ended up I took shots of our entire conversation, and of my cancelled withdrawal, new withdrawal, confirmation email, confirmation of confirmation email, and then added it was all going onto discord and other crypto sites, which may or may not explain why the new withdrawal was processed and in my wallet within a couple of minutes, though they did charge me for two withdrawals!
If anyone has stuff on there or other monkey sites and wish to zero their account, I suggest leaving a small enough amount behind for your last withdrawal that isn't worth their while to fuss over.