Conflict with WooCommerce variable products

Jetpack is not currently connected to the https://mundogadgetec.com/ site. I’d recommend getting that connected as a first step.

Jetpack cannot access your site’s XML-RPC file, which is causing the problem. This file is used by Jetpack and other plugins and apps to connect to your site. It must return the following message:

XML-RPC server accepts POST requests only.

You can see a working example here: https://wp.cloud/xmlrpc.php

Since your site returns a ERR_HTTP2_PROTOCOL_ERROR error for the XML-RPC page, I’d recommend checking the following:

1. Can you see the xmlrpc.php file on your web host server? It should be in the same location as other WordPress files like wp-config.php. If you don’t see the xmlrpc.php file there, please try re-installing WordPress by going to the Dashboard -> Upgrades page and clicking the “Reinstall” button, or contact your web host.
2. Do you use any security plugins that may block access to this file? If so, could you try deactivating them? You might also want to check your site’s .htaccess file for any rules that might be blocking access to the xmlrpc.php file.
3. Does your web host block access to this file? If you don’t find a plugin that may block access to the file, I would recommend contacting your host. If your host only offers XML-RPC access by allowlisting IP addresses, then they will need to allowlist the Jetpack IP addresses listed here: https://jetpack.com/support/how-to-add-jetpack-ips-allowlist/

If you want to learn more details about XML-RPC and how it interacts with Jetpack, you can check out our detailed guide here: https://jetpack.com/support/jetpack-and-xml-rpc

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If the issue remains once you’ve fixed the site’s XML-RPC file and Jetpack is connected, I’d recommend making sure something else on the site isn’t causing the problem.

The best way to find out if something is interfering is to test for a theme or plugin conflict. You can do that by following these steps:

1. Temporarily deactivate all plugins except Jetpack, and clear your browser’s cache.
2. Then, try adding a variable product to the cart again. If the variable product works correctly, then you know another plugin is conflicting here.
3. You can reactivate plugins one by one, checking adding a variable product to the cart after each one to discover which plugin is causing the problem.
4. You can leave that plugin deactivated and/or contact whoever makes that plugin for help resolving the issue it’s causing.

If deactivating plugins doesn’t help, it may be your theme.

1. Temporarily activate a default WordPress theme like Twenty Twenty-One.
2. Then, try adding a variable product to the cart again. If the variable product works correctly, then you know it’s a problem with the theme. You can contact whoever makes the theme for help resolving the issue it’s causing.

You can see these theme troubleshooting steps in detail in our Troubleshooting manually guide.

Let us know how that goes!