Thank you for your interest in the plugin. I only “just” regained ownership of it, along with five others. Now that I know that there is someone actively using it, I will prioritize the exhaustive testing of it with current versions of WordPress and PHP.
I have been using the time to update the other plugins: three have new versions already released; and a fourth needs so much work, much of which I have completed, that I had to completely rewrite it, but am now contemplating splitting it into two plugins, one for older versions of WordPress and one for newer.
To the best of my knowledge, the change of “Tested up to” from 4.6 to 5.8 was made by the interim owner after he verified that the current version of Reveal Network Activated Plugins also worked with then-newer versions of WordPress.
I should also mention that I plan to rename this plugin to highlight the additional functionality added over the years.
“Now that I know that there is someone actively using it” To us it is a must plugin for a multisite(network). So essential, I think it should be in the core functionality.
Thank you once more (…and a lightning fast reply. WOW)