Hello.
Thank you for your review.
The fact that the plugin has a premium type service is mentioned in the plugin annotation and in its WordPress catalog description: https://www.ads-software.com/plugins/cleantalk-spam-protect/
https://i.imgur.com/idRlgNI.png
Most importantly we do not advertise our service as a free one. We say upfront that this is a premium service plugin and you have a free trial before switching to its premium version.
CleanTalk is a plugin of free code that works with the Cloud Anti-Spam Service: https://en.wikipedia.org/wiki/Software_as_a_service
These types of plugins are allowed in the WordPress directory, please look here:
https://www.ads-software.com/support/topic/is-this-plugin-free-to-use-after-trial/#post-5336850
We offer the fastest, strongest, wide functionality anti-spam solution for any WordPress user for a very cheap price.
Let us know if you have any questions.`
