How long do my product changes take to reach Facebook and Instagram?

Meta reads your Product feed URL on its own schedule, so changes show up after its next fetch, not instantly.

To ask for an update sooner, open Plugins → Instagram & Facebook Shop and click Refresh feed now. The Status card shows Last synced and # Products synced.

If some products are missing, look at Catalog Health. It lists items Meta flagged, such as a missing price, availability or image. Fix those products and they clear on the next sync.