The cheat code as for now was just skip feature to skip part of the game if you already went through it before. It's "Skip."
Also, what orb did you already have? There's supposed to be 5 orb, The succubus orb, which you already have from the first Alistair Encounter, Wolf Orb, Harpy Orb, Fairy Orb, and Mermaid Orb. Make sure you already have all of it and come back to Alistair then you'll be able to access the capital.
And as for the bug, Noted.