It's a android phone and it uses google chrome, if this is helpful.
On my laptop I use firefox with no problems apart from when there's definately a problem at the forum's end and others report the same problem. I'm thinking it might be my phone but idk for sure because phones tend not to like me.
I *think* the message says something about posting multiple times or something but I can't zoom in to find out what I'm in trouble with it for and I know for sure I only clicked once to post.