MMH5.5 - Heroes of Might and Magic 5.5

Hello everyone! I tried this game – I like it so far. But (!). I can’t conquer abandoned mines, crypts, mausoleums, and other treasure troves, either in the campaigns (I’m currently playing through the ones from Heroes of Might and Magic V) or in multiplayer. What could be causing this? Also, I can’t figure out how the artifacts that give resources work – they simply don’t do anything. Plus, the Leadership perk didn’t work on the Necromancer in the campaign – the Necromancer didn’t receive the +3/+5/+7 attack bonus. Also, the bot script was broken in his campaign – they could just stand there and do nothing for a long time (but I looked around the forum and realized that this can happen).