If you have developed a free plugin that you want to switch to paid, you will need to take the following steps:
Create a new copy of the plugin with the desired changes and publish it as a paid version on the marketplace.
Once the paid version is live, hide the original free plugin from the marketplace.
Please note that existing users who have already installed the free version will still be able to use it, but it will no longer be available for new users to download. It's also essential to understand that this process will result in the reset of some critical metrics with the new commercial plugin:
Installs: The install count of the original free plugin will reset to zero for statistical and ranking purposes on the marketplace.
Reviews and Comments: All reviews and comments will be removed for the new commercial plugin.