Diablo II (2000) P2P

I installed the original DII and LoD. I got errors that P2P and tracker were disabled. I need P2P as I have no internet most of the time.
The URLs to fix these errors had been removed (404). What are the instructions?
What is this tracker and do I need it? Please help!

same here. I want the offline multiplayer feature which was removed from the “Resurrected”. I’m ready to buy extra copies for everyone that’s going to play it, but the download links are broken and when you try to request tech support you fall into a black hole.