https://help.incartupsell.com/en/articles/8558593-displaying-offer-on-unsupported-themes-new-ui
Displaying offer on unsupported themes (New UI) | In Cart Upsell Wiki
Manual Offer Placement
in cart upsellthemes newdisplayingofferunsupported
https://apps.shopify.com/upsell-cross-sell-kit-1?locale=ja&surface_detail=checkout&surface_inter_position=1&surface_intra_position=5&surface_type=app_group&surface_version=simplified
Frequently bought together bundles & in cart upsell, boost AOV | Shopify App Store
frequently bought togetherin cart upsell