You can try to solve the problem by deleting or moving the Campaign.sav and CustomCampaign.sav files from the game profile.
I deleted them, and the mission names disappeared, and the game crashed after the first load.
By the way, is it normal that in the first scenario, two bots merged their armies into one, and then the empty one just started blocking the portals, making the turn incredibly long, and just running around to capture buildings? It's impossible to kill him due to the mission parameters.