Coming in 8.4. The restock prompt now appears earlier — when your active vial has about a week left and you don't have a backup on hand, not just after you've run out. Includes the active discount code so you can reorder in a single tap.
Surfaces both on the vial detail screen and as an inline chip on the vial card in the My Stuff list, so you don't have to dig to find it.
Stays hidden when you already have backup vials in stock — no need to push you to the shop until you actually need to reorder.