That other account has 16 times the word "idiot!" in its signature.
There are 3 visible posts by that account, by someone who doesn't seem to understand the difference between hardware and software serial ports on a chip, so that is for sure not the reason for being banned.
Your account (or even your pc) might have been hacked by some spammer, causing that other account to be banned now, and the spamming posts removed.
Also for sure, SHOUTING and SHOUTING will not help resolve this.