How much time do I have to use my cash back balance? When will this cash back balance expire?

Any cash back balance will expire one year from the last date of purchase of the Gourmet Passport Offer Pack. For example if you last purchased the Max Pack on 1st August, 2016 then must use any cash back balance in your account by 31st July, 2017 otherwise your cash back balance will be reset to zero on 1st August, 2017.