SOS URGENT website not available


I had installed AVH 1st defense and it worked for a month. But as of today NOBODY has access to the website even if i delete all the files (at the network level) !!!!!!!

Here is the message I get:

Access has been blocked.
Your IP [] has been identified as spam

Protected by: AVH First Defense Against Spam - WPMU DEV Version

Please help. I do not understand why I still get the message after deleting the plugins from the server!

The server is
The admin is
ID: admin
PWD: dsc4Pq4!

Thanks a lot for any help.