This might be the cause of it:
(I'm on my third crossed out seed now, if anyone can help it would be greatly appreciated).
The SEED that you have to put in the very first "
confirm seed" text box is the newly created seed, not the other cosigners' seeds.
Next button will always gray-out even when you entered a valid seed, it needs the correct same seed as displayed in the previous page.
Huh it works today.
You must be drunk last night