NHF – new heroes for Heroes V 3.1.

Good evening, heroes! Please explain and suggest solutions to the problems. Thank you in advance! 1) For Inferno: the second tier, second upgrade (commonly known as "toads") now costs one mana to jump. Question: why is that? The description says that the mod only changes/adds heroes, right? 2) The ability of the hero Valafar (opens portals on the adventure map) does not work if he is chosen as the second or subsequent hero. It only works if I choose the faction and this hero directly in the game menu. 3) For the Dungeon faction: tier 1, second upgrade - the hunters' ability "Invisibility" does not work. The button is always grayed out. That's all I've found so far. As you can understand, my desire to play has vanished. I'm waiting for help. No other mods for "new heroes" or "new creatures" are installed.