dear sir please check that email by which you opened your account. They must be sent you a mail if your account is on the block list.
Would you mind to just comment the email and post it here? just quote it.I am gonna share my screenshot with all proof soon
Make sure that it came from real coinbase email not from someone that is just emailing random people to spread FUD or lie to scare people and let them out from using coinbase.What's the point of opening a thread when you don't provide any proof in form of a screenshot or don't even copy the text in the email. 
Let's wait for his/her "screenshot with all proof soon".