Instead of using someone's personal information to fill up the KYC forms on that website that you are referring, why not atleast get some escrow (if your balance to that site is big), though you can still use escrow whenever you want.

It's not recommended to give your credentials to someone else you do not know, much better give the account to the one who would like to help you after you successfully withdrawn your balance. Afterall it's not your account since you are not the one who verified it.

All jof this is ust for the security of someone who might want to help you.