Re: Beware of Shuffle.com: Airdrops Removed on Launch Day – Scammers
Same thing happened with me, they told me they want me to do KYC, I attempted to do the KYC, it got declined and they didn't give me a reason why, just told me someone from the kyc department will contact me and nobody done so 
How long ago did you provide the Know Your Information document and what is the update? The information might be accepted and if not accepted then there might be several issues for example the document might be edited, might be bluer, might be duplicate document which has already been published and there might have other reason too.