Some themes come with an AJAX cart. This is the cart that slides out from the side. Kartify requires a true cart page to function.
Know Themes with Side Carts:
All you need to do is change the themes cart to use page. To disable these cart types and change your cart type, please go to “Customize theme” in your shopify dashboard under sales channel “Online Store”. Under “Cart Page” (or a similar section), change “Cart type” to “Page”. Drawer, slide out, or modal cart types are incompatible with option pricing.
If this doesn’t solve the issue, you may have a custom theme which isn’t outputting the automatic Script.
You can add the code manually to your theme to output Kartify. If you know how to edit your themes file, simply insert the following code on the cart.liquid or equivalent cart section:
Please remember to backup your theme before doing so.