The author is right, I should not have used profanity in my review. That wasn’t very classy of me and I truly apologize for using a 4-letter word to describe the garbage you output to users’ HTML pages as comments, most likely without their knowledge.
HOWEVER, my choice of words doesn’t change the fact that your plugin emits suspicious HTML code and uses multiple md5() hashes in the PHP source code for no apparent reason, which is a tell-tale sign of malware (even if it is not actually malicious, it looks like it is).
The purpose of my review is not to be mean, but is to make users aware of what you’re outputting to their pages, most likely without their knowledge, and without the option to disable it. I think it is especially important because it gives you, the author, the ability to track sites who have installed your plugin, something I’ve never seen another WP plugin do. For example, you can query NerdyData.com (https://search.nerdydata.com/code/?and_code%5B%5D=Plugin%20WP%20Missed%20Schedule&limit=0,10&rank_min=1&rank_max=1000001) to get at least a partial list of sites who have your plugin installed and active. A more specific query would allow you to see who is using which versions of your plugin.
Even if the code you’re secretly outputting to users’ pages is just version numbers, in the event a security vulnerability is found in a specific version of your plugin, hackers could use the same search queries to specifically target all the users on that version of your plugin. Not cool.
I would welcome an explanation of how your plugin’s outputting of version numbers and other chars to HTML comments benefits users who have installed your plugin, as well as what you, the author, use them for. I’m happy to admit I’m wrong if you can correct anything I’ve said.
I’m not accusing you of wrong-doing, I’m simply calling attention to what I think is problem with your plugin. And I should’ve said it nicer the first time.