This site pushes stolen content made by AvP2 fans. The owner Rommie tries to charge many players to use his Adolf mod which violates the AvP2 EULA.
Rommie and his moderator team are communists. They will censor all free speech on their public forum, discord, reddit, etc if they disagree with you. Go on their site and ask them about msp 2.4 and watch the hostile reaction you will get. They will lie and tell you to downgrade to their stolen content of 2. 3. 4. These guys are TERRIBLE!
Avoid at all costs!