If Kaching bundles app is only adding 1 item to the cart, even when customers select a larger quantity in the widget — don’t worry, this is usually a quick fix related to your theme setup.
Why This Happens
The issue typically occurs when the native quantity selector is not added to the product page template in the Shopify theme editor.
When the quantity selector is missing:
Our app attempts to inject a hidden quantity input into the product form.
On most Shopify official themes, this works as expected.
However, in some themes (like Shrine), the hidden input added by our app is ignored during the add-to-cart process — causing only 1 item to be added, no matter what quantity the customer selects.
This happens because the form submission in these themes doesn’t recognize or process dynamically inserted quantity values properly.
How to Fix It
Step-by-Step: Add a Quantity Selector to Your Product Template
Go to Shopify Admin > Online Store > Customize
In the theme editor, switch to the Product page
Click on “ + “ button (“Add block”)
Choose Quantity Selector element from the list
Click Save button on top right corner of the editor page
✅ You’re done! Even though the quantity selector will not appear visibly (because our app hides it), it’s now part of the page structure — and that’s what matters.
Still Not Working? Check These Next
Open Dev Tools (F12) and check the Console tab
If there’s an issue with detecting the “Add to Cart” button or product form, our app will display an error here.
Make sure there’s an actual Add to Cart form in your product template
Some highly customized or headless themes remove it — which breaks expected functionality.
Still Need Help?
If the issue continues after adding the quantity selector and checking the console, contact our support team via the in-app live chat. We’ll take a closer look and help you resolve it quickly.