Unable to post

I got this forum activated, but and I set up my profile, but though I did some tests posts, I was unable to type anything in. The last time I tried to type in a comment, I was redirected to another Peepso page where there was nothing but shortcode. This must stop when I launch my site or I will have to deactivate this plugin.

https://ww.wp.xz.cn/plugins/peepso-core/