This plugin is really only very rudimentary and it seems the developer has stopped developing it further.
We wanted to use this plugin to build a public status page for our servers. For security reasons, we don't want to publicly show the URL/IP of all of our servers. Rather we just want to show the monitor's name ("Server 1" instead of an IP).
I contacted the author regarding this as the command [wp_up_monitors] keeps showing the IPs. The author didn't seem to understand the problem and was not able to provide solution.
Also, there's barely any documentation either.
I was able to find a free plugin that in the Wordpress plugin directory, that does all this plugin does and more.