If products are not adding to cart it is typically one of the following:
Invalid Calculator Product Weight Calculation #
A product cannot be added to cart if does not have a weight. The application will fall back to 0 when it can but there are cases where you mess up the calculation so badly it cannot fall back.
Check Calculator > Calculator Settings > General > Advanced Config > Product Weight Calculation
When in doubt set Product Weight Calculation to a fixed value and remove your formula.
Example: 10
SKU and Inventory Location Problem #
By default new calculators are set to use a SKU that is “Same as default variant SKU“. This means when the app creates new variants the variant will have the same SKU as your default variant.
This can be a problem if your product default variant does not have a SKU set in Shopify and you have multiple Locations set up in Shopify.
– Edit the product in Shopify, edit a variant, select the first variant in the list of variants (often named Default Title) and set a SKU.
Another solution is to change the SKU method to one where the app will set its own SKU rather than relying on a SKU existing.
– Same as selected variant SKU (might not always work)
– Created by app (random)
– Calculated from a Formula
Inventory Location not appropriate for product #
This typically happens if you have the Calculator Inventory Location set to something that returns an invalid value.
Example: You have First Active Location selected in App and Shopify returns location not available for the product or that does not have stock.
Same thing can happen for any of the inventory locations. Always make sure it will be valid for the product associated with the calculator.
Add to Cart Script that is invalid #
You have set an Add to Cart Script that is invalid for your theme or has errors.
Go to Settings > Add to Cart Script
Check for errors or remove scripts. You should not have these set unless you know what you are doing or using an Ajax Cart which should also mean you know what you are doing. For everyone else, hire a developer or leave this setting alone.
UNCHECK your Calculator > Calculator Settings > General > Advanced Config > Run a script after product added to cart
jQuery Problem #
If products are not adding to cart or the spinner appears then stays on screen, you likely have a JQuery conflict or JQuery is missing.
See Dealing with JQuery Conflicts
Using Metadata with Shopify Product options #
Connected metadata is not supported for Shopify product options.
If you are using Option Price Calculator with Shopify default variants and have connected metadata to them, the app will not add products to cart as expected.
Shopify does not yet have the required api to support this feature. Once Shopify adds the required API, we will integrate this feature.
Until such a time you must disconnect any connected metadata from your Shopify Product options.
Product has 100 default Shopify variants #
Your Shopify product must have less than 100 default Shopify variants. If you have created multiple Shopify product options and the total variant count is 100, Option Price Calculator will not be able to add products to cart.
The app will manage variants created by the app and will not make changes to your existing variants. It will only mange the new variants that it creates. If it does not have room to create variants because you already have 100, the app will not add to cart.
You should remove some variants or product options from Shopify and move them to the app instead.
We recommend you have less than 50 Shopify default variants.