MMH5.5 - Heroes of Might and Magic 5.5

Hello, dear forum members, this is my first post because I couldn't find a solution to the problem in the FAQ, guides, forum, or manuals. When playing on generated maps, everything works fine, including scripts, everywhere except LAN. I wanted to play with my father, and we managed to launch maps so that they wouldn't produce errors, but neither the scripts for deliveries from mills/blacksmiths (where ballistas and tents are sold) nor the ability to become governors work, so the portal linked to the same button/spell doesn't work either, and so on. However, we were initially able to join an alliance, and we can see each other on the map. This is not critical, and the game is playable in principle, but half the fun of the mod is lost. Can you suggest what to do? Or maybe there's already a solution, but I'm just blind? The map was generated using Utility. We patched it using MapMixer (with the checkbox for enabling scripts checked). We have the same game version (5.63), installed the latest version of the mod, and copied the files to the second computer. We're using Windows 10, if that matters. I understand that everyone is busy, but could you at least point me in the right direction to find a solution, please?