And still, I can't get it to work; I try to sail to the turquoise one. This shaman can summon a ship, but the ship, damn it, won't sail! And the shipyard doesn't want to build ships, claiming there aren't enough people and no one to build them. But I have a huge army... What the heck is going on???

Added after 10 minutes
Oh, by the way, people! I've already completed the Necromancer mission where you collect a complex amulet, but after collecting all the components, I couldn't combine them. How was I supposed to do it? I tried in the city and on the outskirts, with all the heroes, and nothing works.