The extension itself does NOT collect data.
Some of our extensions require a license key to be activated, you can register your email directly to one of our websites (NOT on the extension itself) to get your license key, the registration is NOT done on the extension.
The extension might communicates to our servers the license you have entered there but our server do NOT save the data, it is only used for validation purpose.
It is used to check on our servers if you already registered your license and if your license is still valid.
The extensions use local storage to store basic data like the settings of the extensions and your license. You can delete the data anytime by uninstalling the extension.