Gravity Perks Limit Checkboxes plugin gives you the power to limit how many checkboxes can be selected at any particular time. You can specify the minimum and maximum checkbox numbers per checkbox field. You need to install Gravity Perks plugin in order to use this plugin.
Gravity Perks Limit Checkboxes
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For License Key:-
GPLTop.com products are functional without entering a product license code. We are unable to provide a license code for you, and it’s because we already obtain the Plugin/Theme to the original developer.
The use of a license code usually is for automatic updates and premium support from the original developer. Besides, we guarantee you to deliver a free manual update and minor assistance for your convenience of using the product.
If the plugin or theme is not working properly and we also fail to help you then, in that case, you will get the money back. If the plugin and theme are working properly then you will not get the money back.
How to fix “style.css missing” error while uploading themes?
A common issue that can occur with users new to installing WordPress themes is a “Broken theme and/or stylesheets missing” error message being displayed when trying to upload or activate the theme. This is because the theme download package on ThemeForest includes additional files to the theme such as the documentation, license etc.
To solve this simply unzip the theme package you downloaded from GPLTop and upload the themename.zip file which is included (with the file being the name of the theme).