I am having trouble posting comments to posts in the Coffee community today. I have posted about it in the Support community but since those comments posted ok there, I thought I would try creating a test post here in c/Coffee to check whether is limited to comments.
Here’s a test while using Voyager. Let’s see what happens.
Edit - Success! :)
Are you still having trouble posting comments here? Maybe you were trying to comment during update/maintenance and the sever blocked it. Hope it’s worked out for you.