At CEX.IO, we take compliance extremely seriously, which unfortunately slows down the verification process. On the plus side, you can rest assured that we do everything by the book. Your safety matters more to us than our profits - that’s why clients' patience is key.
It's been 3 weeks since the last message!
My question about it is not seen for 2 days!
CEX.IO - is it normal?

They have not resolved your case yet which is really frustrating for a user when his funds are stuck in that exchange. The previous complaints against this exchange were resolved in time, but I don't understand why they are taking so much time this time. When a support agent doesn't see a message for two days, lower your expectations for a quick reply and let them work until they finish all their investigations and give you a chance to withdraw your funds.
I know it's hard to be patient in this situation but give them more time to complete your work till your problem is solved.