If it's not working with Edge, Chrome or Firefox, it's not a browser issue. Check to see if you're PCQ&A Favorites or Bookmarks are still set for no encryption:

http://www.pcqanda.com

If they are, you need to update them to use encryption:

https://www.pcqanda.com

Edit: Also check to make sure the date and time are correct on your computer. If they're more than 24 hours off it can cause problems with secure websites.

If this doesn't work, please list all your active security programs like antivirus, antispyware and firewall. Also list any extensions or add-ons you have in your browsers.