Stumbled upon a different kind of popup window this time. It wasn’t included in the screenshot as I wanted to make sure the number was visible, but it repeatedly wanted me to download a zip file. I managed to hit the print screen key right after I closed the box and got the picture before the next one appeared.
While the URL is visible in the screenshot, please be careful about going to this specific URL, it may seriously bog down your browser.
Screenshot on Imgur:
https://imgur.com/a/Uvvkw6D
EDIT: Oops, I misspelled "Technical", and it's not letting me change it right now. Oh well. :P