What were the reasons of my ban from SU, MSU (for a period of 1 month)? and extension of ban in SO from 7 days to a month without any warning and notification?

• "A Day in Penalty Box" tells:

If a moderator has warned you via email about behavior, and that behavior continues, for a period of 2 to 7 days, your account will be in timed suspension

I had never been warned through Email.
I also did not continue (what had I continued and where)?

As a matter of fact, I even do not know what had I infringed this time