ctrl+shift+k(Windows) if you are using FireFox or
ctrl+shift+i(Windows) if you are using Chrome. Maybe you will see a console log output with a text of the answer from the server or logged in JS error. Please, include such information in your support request. The example of log messages notifying about the plugin misconfiguration:
No cart form found! Check WooCommerce hooks integration with your themeIt means that the standard WooCommerce form for single product page with the class ".cart" is not found on the page. Sometimes it happens when the WC hook is overwritten by the theme or when you are using some page builder plugin and it does not output that form.
Too many cart forms found! Uni CPO works on single product page only! Looks like you are trying to output the product's form via shortcode on some page and even not from only product, but with several. Unfortunately, Uni CPO will not work in this case. Use it on the regular single product page.
Regular price is not set. Price is required (even "1" works)!Basically, you just forgot to set any price for the product and WC treats it like a free product. No form intended in this case!
It seems that price tag selector is wrong, please update!and/or
It seems that image tag selector is wrong, please update!It means that your theme uses custom HTML markup/CSS classes for standard WC containers. Please, use custom selectore in this case. There is a better explanation of this problem on this page. Please, keep reading.
languagesfolder within the plugin folder. If it exists - us it, add your translation there. Also, please send us the updated version, so we could include it in the next version of the plugin and you will not lose your translation. If it does not exist - create a new .po/.mo files and place them in
wp-content/languages/pluginsfolder to apply your translation. We ask you to send this file to use as well, we would include it in the next version of the plugin.
max_input_varssetting on your hosting/server. This will solve the problem.