I don't see many users getting the emails asking for the source of funds though so I guess my account is fine. I don't see any reason to panic if they ask for the source but I'd like to know if a lot of us received the email and goes on without worries after submitting documents. I checked my email which I find nothing is sent to me about it.
I have not logged to my account for a year but I have few tokens I kept like ADA but nothing much.
Don't wait until you receive the email asking for the source of your funds even thou you have no worries about submitting your personally documents. An exchange should never be used as a wallet. A lot of things happen to an exchange such as hacks or getting shutdown on short notice.