If you run into a technical issue while taking the test, do not panic. CASPer is aware of potential technical issues and has sanctions in place to handle these situations. If something does go wrong, refresh your page. If that doesn't work, move on to your backup web browser and attempt to take the test from there.
If that doesn't solve the issue, then you should immediately contact the live support and technical team through the online chat function found in the orange bubble at the bottom of the test screen. Don't be afraid of losing your answers or responses; CASPer saves them every second, as long as your internet connection is stable.