If any video in this course doesn't play and shows an error simply refresh the page. Also you need to USE CHROME for this course to work as intended. Other browsers will cause problems.

Copy the troubleshooting measures from the previous lesson - the one you just a second ago clicked through - to your computer. They will fix any (!) technical problem you might encounter.

The problem in 99.999% if not more of technical issues is YOUR system which I can not control. Try all (!) of the troubleshooting measures if you encounter a problem. Do not skip a single one. Using Chrome will already eradicate 99% of them if not more.

Only if none of these measures worked, reach out to me via my homepage and I'll help. Otherwise I spend more time repeating myself than helping people with learning German.