I see, that makes sense. I used to use Comodo as well, but it ended up breaking too much stuff, and was constantly popping up, so I don't use anymore. I did run into a similar issues where I couldn't login to my own website and I tried absolutely everything (including wiping the whole server) until I found it was the virus scanning on my home router blocking some random Wordpress script (which was needed for logging into the admin panel on my blog). Glad to hear you figured it out.