You have a large amount of deleted questions.
The only way you can be allowed to post questions again is to edit your old questions and undelete them, give them some time to hopefully be upvoted. Then and only then can you post questions again.
There is nothing a moderator can do about this. The system locked you from asking
You might be able ...
Chat is a privilege, not a right. It is a system in place for the civil discussion of whatever the topic is for the chat room (as long as it fits in the general "be nice policy" too).
You were repeatedly flagging a specific user's posts as spam/offensive, and the posts were not. This is considered to be flag abuse.
Sure, you could have been warned, which ...
This is a feature/hurdle that was recently enabled site-wide across Stack Exchange (not just Code Review). See this meta.se post here:
Warn new users when they ask a question after a previous question is closed, downvoted, or deleted;
What should I do when I see a “question ban warning”?
The concept also takes in to account your deleted questions that had ...