I am now working on the assumption that they have to credit the points simply before their next voucher mailing.
Whatever about us waiting for points to transfer to Avios they will have 'normal' customers who expect points which they can use for Reward vouchers and discount on shopping.
Supervalu will have a lot of complaints is they pass the mailing date without crediting the points.
So the question is - when is the next mailing as that should be our target expectation.
It seems this offer was an almighty foul up by SV though!!