Just an update,

I have turned off all cache except via my CDN Ezoic. On there I have excluded the extension from caching but still no one can comment.

Sometimes it works, sometimes it doesn't.

Hi Claire,

I just visited the site and posted a comment? I didn't get any "token" error?

where do you get com_jcomments doesn't exist?

I have disabled all caching on my website as I was debugging another components error, and I tested Ccomment and STILL no one can post a comment because of token errors

Joomla cache is off
jch is disabled
ezoic cache, pagespeed and CDN is off

I am no again getting the CComment plugin file for com_jcomments doesn't exist error that I had before also.

I disabled page cache in the Joomla plugins and it's still not working.

Is your site using caching? If yes, disable it. Sound like you use whole page cache - which caches the token and because of that when someone tries to post it uses a cached token that is no longer valid.