Hi @mrina-1, thanks for reaching out.
Wordfence free is certainly still available and the most popular solution for our customers. For reasons of why we’ve changed the free signup process please take a look at the following blog post: https://www.wordfence.com/blog/2022/11/wordfence-7-8-0-announcement/
Each site does require its own registration key. You can sign up for multiple site keys using the same email address as there’s no limit on how many a single email address can configure. It’s just the process itself that’s changed, with no further limitations. Existing free site keys created before the change will continue to work.
Here’s a handy video and documentation around how to sign up: https://www.wordfence.com/help/api-key/#installing-your-free-license-key
You can utilize Wordfence Central for free to manage security across all sites you’re responsible for in one dashboard. There’s no necessity to do this, though.
Thanks,
Peter.
