Yes, you can! Hey Notify Pro extends the free version with additional features. It can be added to your site at any time and will not affect your existing notifications.

License keys are subscription-based and will automatically renew each year unless cancelled. If you cancel, you can continue using the plugin, but you will no longer receive important updates or support after the license expires.

Yes, but you need a WordPress.com plan that supports third-party plugins.

The license must have a site limit sufficient to cover all the subsites where Hey Notify Pro is activated.

Development and staging sites are excluded and do not count towards the site activation limit. This works with most hosting service staging environments.