While I appreciate the continued attempt to clarify this matter, I am also alarmed and the response DH is taking to these things.
You and I exchanged emails after the 777 promo. Things were never really cleared up, but I just let things be.
DH cannot change the agreement and then retroactively enforce it. If the agreement is that users will get paid $65 for each person signed up, DH has to do this even if they run a promo where that would lose them money. One of your emails said by continuing as a DH customer and paying my bill, I agreed to the TOS each time they were updated. However, in my original agreement that was never written so it can't be enforced.
In short, not only can changes to the TOS not be retroactively enforced, but changes to the TOS cannot be enforced unless the user has agreed to them. DH is not following their own contract with its customers.