As long as you play unrated games vs. yourself don’t see why you would get banned. I’d like a mod to comment on this if possible - shouldn’t ban players due to a lack of features on the site.
Mods rarely comment but if you go back through search you will find many who have been banned for having multiple accounts.
https://support.chess.com/customer/portal/articles/1444776-can-i-have-multiple-accounts-
As long as you play unrated games vs. yourself don’t see why you would get banned. I’d like a mod to comment on this if possible - shouldn’t ban players due to a lack of features on the site.