I never have that issue. can you share what exactly happened. did you verify your account? it is important to do kyc to prevent any problem with the exchange
I had a very old account which I never gave ID on. Probably from late 2013 or early 2014.
At some point I opened a second account and gave my ID.
I went to put my ID on the second account (dumb I know now), and they disabled it.
I think the reason was that I used the same ID on both accounts, as that is one of the possible reasons given. they didn't exactly say why.
I think they will probably sort it out, but I guess they are very busy