aww! That sucks! I've seen many masquerade / no face show in chaturbate. I was planning to do a Halloween special wearing a mask, but I'm totally going to contact their support first to ser if even in Halloween they are gonna be so strict into their policy.
I kind of agree to what Caireen pointed out, once your face binds you with your audience and also make your room so much more "instantly trackable" in the main pages, but I'm sure of showing your face is something out of your boundaries l'm sure you can still be successful as a cam model, but you have to find a way to show them your personality.
And no, I dont know any site where it's totally allowed I'm new to this industry.