US govt site can't be accessed -- "No Client Certificate presented" error
I am trying to access US government sites that require certificates in order to be accessed. I recently downloaded Firefox onto my Mac (Mojave) and imported all of the certificates, which show up under the Authorities tab in the Certificate Manager. I also added an exception for a couple of sites to turn off the pop-up blocker. However, no pop-ups appear to allow me to choose a certificate, and instead I get this error:
No Client Certificate presented
Why is this happening?
Additional System Details
- User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_2) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0.2 Safari/605.1.15
Screenshot of the error and what is the site link so others can test it?