Let’s Encrypt has an hourly limit of 5 validation failures per hostname.
If you’re not careful, you can get a “LetsEncrypt challenge request 429” error. Once you trigger the hourly limit, there’s nothing to do but wait!
For website owners, the security of their WordPress websites is an important factor to consider. High authority websites can receive thousands of visits a day, so it is crucial the website stays up and running without any security breaches. In this article, we will share some tips on whether you should consider adding a WordPress security plugin to your website and what can go wrong if you do.