I have an annual combo that renews in July, the gifts usually arrive towards the end of the year or start of the following year. My shop account doesn't show any voucher available and I haven't received the badges yet.
Looking forward to the voucher and am also wondering whether to ask about it, but for now am assuming things'll be sorted eventually. I should add my experience with Rebellion subscriptions over the years is very positive, a lot better service than I've had from some other publishers.