Error with products that use "Step"

Is your theme replacing the quantity input template and doing something “non-standard” for your quantity inputs? Maybe something changed in the theme in all your updates? Did you not test all those updates on a staging/development server first before doing them on a live site?

I can NOT reproduce any issues with step values here on my development system, with latest versions of everything, running the WooCommerce Storefront theme. Step values are working exactly as intended with the newest version of WooCommerce.

Note that if you enter a step value, then the minimum should also be the same as the step value, meaning 4 in your example. Otherwise, if you leave the minimum blank, WooCommerce sets the min at 1, and then the html5 modern browser input checks will test if the quantity is the sum of that initial minimum plus a multiple of the step value. However, then my plugin will give you an error since it’s interpreting step values as the quantity must be a multiple of the step, with no starting offset value. So, if you set your step values to 4, but did NOT enter a minimum of 4, then the HTML5 input in your browser will only let you enter values such as 1, 5, 9, 13, etc., while my plugin checks for multiples of 4 when you add to cart, so my plugin is looking for 4, 8, 12, etc.

I set my plugin to work that way since that was the most common request, when people are selling things that come in a case of 6 or 12, etc., and they ONLY want multiples of that value.

Not sure if that’s your problem, but that’s the only way I could get it to where I could add something to the cart (no minimum, but a step value of 4).

If the minimum value is not getting set correctly, then my guess is your theme has changed something that is affecting those values. But, in your first post you said the minimum still works fine? But, if you set both minimum and step then somehow your minimum is getting reset to 1 (or no value, which defaults to 1)??

You can email me privately through the contact form, or stephen at (my domain name), and set me up with temporary access so I can take a look at your settings and anything in the theme or another plugin that might be interfering with my plugin’s settings.

Closing this, and for others that may find this, it was a conflict with another plugin that was also trying to set a minimum quantity. Two different plugins attempting to adjust the same value is never a good idea, unless they were designed to work together. The conflict was somehow resetting the minimum quantity to 1, which then made the step values not work correctly.