Errors

I have a very popular website, and people post and register just about every day; however, as of late I have not been getting anything. I have discovered that the plugin is keeping people from registering and posting.

When registering, people are getting this message: “Forbidden. Data submitted too often. Please wait a few minutes.”

When trying to post, people are being identified as spammers. I am talking about people that have been posting material on my website for years.

I had to deactivate the plugin.

The page I need help with: [log in to see the link]