Looks like this is connected to another account already banned for multis. They shared some sweetheart trades.
https://politicsandwar.com/nation/id=587935
Possible multis which are on the same network and activity seems sparse enough to indicate they create, go inactive, create again.
https://politicsandwar.com/nation/id=593126
https://politicsandwar.com/nation/id=588092
some other nations showed up as possible hits but didn’t look as suspicious.