Problem to publish a comment on post for some accounts

Hello,

I have an issue with severals account to reply to posts on my wix forum, if someone can help me that would be wonderfull.

I checked on wix forum's application and the forum category permissions are set like that:

- who can have acces to this category ? : Only members

- who can write posts in this category ? : All members

I also checked on my website's contacts list and the account attempting to reply is a member

But this guys gets a message like this when he tries to reply a post :

wich mean in english "You cannot publish this comment. To know more, please contact the owner of the website"

Can someone help me to fix this ? The problem occurs for some account but for plenty others it's all fine so i don't get it

Sorry if i do spelling mistakes, i'm french

Thanks a lot!