Sorry, this promotion is not available
This could be because:

• You are not eligible for it.
• It has expired.
• You're trying to access a miles promotion and are a points-earner, or vice versa. If this is the case, you can easily change your earning preferences.

Questions? Contact Marriott Bonvoy Customer Support.

Thats what I get when I try to register for the promo =[
Nothing in the T&Cs indicate that it would happen to me.