This is happening for about 4 days now and it is very hard to finish the practice
tests because everything is lost including history and editing sessions.
When will this be fixed?
Why is it happening?
thx
This tends to be something that’s happening at your end. It can be an extension that you’ve added to your browser (some anti-advertising extensions create problems), or it can be something about a firewall that blocks traffic in the network you’re using to access our site.
You may want to look at our lab troubleshooting page, which has hints of what to try, and what to do if you still can’t figure things out.