FBT troubleshooting

Offer not appearing on the product page

• Confirm the offer is Active, not Inactive — check the switch on the Product Page Upsell list, or the Status menu inside the offer.
• Confirm the Trigger matches the product page you're testing: All products, one of the Specific products, or a product in one of the selected collections.
• Confirm the offer has something to show. Under Offer, Specific products needs at least one in-stock product, and Frequently bought together needs Shopify to have recommendations for that product.
• Confirm the Oxify: Product Upsell app embed is on in your theme. The Product Page Upsell page shows an Activate FBT Upsell App Embed banner while it's off.
• Reload the product page in a private window after saving.

See Troubleshooting: FBT not appearing on product page for the full checklist.

Discount not applying

• Check the products were added together with the offer's button, and that at least Minimum products required for discount products (2 by default) are in the cart. Items added with the theme's regular Add to cart button aren't discounted.
• If Apply discount type is Only if trigger product is in cart, check the trigger product is still in the cart.
• Check Exclude subscription products from discounts in the cart editor under Settings → Discount Settings. It's on by default and skips items bought with a subscription.
• Check the combination settings in the same place — Combine with other Product discounts, and the Order and Shipping ones.
• Check that Shopify admin → Discounts lists the automatic discount Oxify Cart Unified Discount. Saving an offer creates or updates it.

Layout wrapping badly

• Under Design → Layout & style → Layout, switch to Stacked — it handles narrow widths better. Horizontal only applies on screens wider than 768 px.
• Reduce the spacing under Layout & style, or the text sizes under Typography.
• Inspect on mobile specifically — most layout bugs surface on small screens.

The offer won't save

• If a save is refused with "Not saved: these settings are over Shopify's 10,000-byte limit…", your active offers hold too much discount data. Remove some products or collections, or deactivate offers you no longer use, then save again. An Approaching the size limit banner warns you before that happens.
• If you see "Your change was saved, but the storefront could not be updated", try saving again — for example, switch the offer off and on again on Product Page Upsell.

Still stuck?

Open Analytics → Product Page and check Impressions. No impressions after you've viewed the product page yourself means the offer isn't rendering — that's a placement or app embed issue. Impressions but a low Add-to-cart rate points to pricing or wording.