Mistreatment

Hello.

Thank you for your review.

The CleanTalk Security Plugin is absolutely free and anyone can install it without any limitations.

However the CleanTalk Cloud service is paid and is of subscription type (SaaS software): https://en.wikipedia.org/wiki/Software_as_a_service

This type of plugins is allowed in the WordPress catalog, please look here:
https://www.ads-software.com/support/topic/is-this-plugin-free-to-use-after-trial/#post-5336850

The plugin will protect your website from brute-force attacks no matter if you paid for the service or not. But you will not receive daily reports to your main and will not have any log details in your CleanTalk Dashboard without the service.

Your CleanTalk Security Dashboard is here:
https://cleantalk.org/my/?cp_mode=security

Best wishes.