Yes. I have accounts set-up in 2005. Verified to the max. They even gave me additional currency accounts back in 2005 (back then there was no VIP and no other currency accounts allowed) because I used to be huge gambler. Still they asked me for those papers. I even had siver VIP account. Then they asked me for more and more info. The procedure took months. Then I did not answer on time. They blocked my accounts in all currencies and blocked also accounts of people to who I sent money via p2p payments and asked them the same questions.
So yes: take it seriously and reply immediately. Take a deep breath. If you do not like it, just close the account. At least if they have additional questions and you reply fast, they will not suspend the account.
If you talk to God, you are praying; If God talks to you, you have schizophrenia.