Okay moderators, I keep getting a drop down box everytiime I try to respond

Is there some sort of a hacker on this site? I type something, and the drop box comes down and said it isn’t valid. Ready to give up on this site if there is danger of being hacked on a site that apparently doesn’t really work well to begin with. The season is bad enough, but I’m out of here and want a refund of my money if things don’t improve on the site.

Please describe the exact steps that you take, and exactly what message you get.