Correct, the IP will be different. I need the IP of when you have an issue. Get the error - Find IP - PM it to me when you are able to return. I can then check if it was banned in the back end.
Now, if this error message comes during a posting, or accessing a specific area of the site, that is a different issue. When this error happens, can you access anything on the site at all?
I can access the Home page but nothing else.