Apparently, it says that web2.0calc's security certificate expired. The only way for me to get onto this site is to go to "advanced" then to "Proceed to web2.0calc (unsafe)". Is it only a problem with me, or is it occurring with everyone?
The same thing happened to me on my laptop.
I am currently using my phone to reach this website.
It is happening to me too. I have sent a message to admin. Hopefully it will be fixed soon.
Says certificate is valid for me... no popup shows- I tried this with every browser (edge,safari,chrome,chromium,firefox) and it does not show up. On a 2017 MacOS High Sierra 10.13.4