SammyServers | Sammy's Textscreens

So I have been having a trouble on my DarkRP server.
I have Sammy’s Text screens Installed. (http://steamcommunity.com/sharedfiles/filedetails/?id=109643223)
It has been working perfectly fine this morning, but now all of a sudden whenever i try to use it, it says: “This tool has been Blacklisted”
I have been searching everywhere and i could not find a solution.
I would really appreciate if anyone could help me out.

Also I have FPP and have allowed all tools by default.

Check your toolgun backlist