I have never posted a comment on the French Club just following members progress. I received a very nasty post from a “Cj”. Please advice how I can discontinue following the club.
Sorry to hear you are having a bad experience in a club. In the club that I host, I don't even give a warning, as I immediately removed two people that decided to join and make fun of the other members. I hope the person hosting the club you're in just removes Cj.
If that doesn't happen, you can quit the club by clicking on the shield icon on the bottom of the app, then click on the link on the upper right (sorry, I use the French language version of the app, so I'm not sure what the English link says) which will take you to another page where there is a link to quit on the bottom.
I wish you the best, Jefesitachica1!