FAQs - Frequently asked questions Setup and Support How do I set up the Internet connection? Who can be contacted, if additional help is needed? Connection errors My Internet connection does not work (anymore). What can I do? The link LED on the computer is not in state "on" (green). The Internet Login (VPN) is interrupted and an error message is shown. The Internet connection is slow. Why? The Internet connection is terminated within a short period of time and must be restarted. Using a wifi router What is important when using a wifi router? How to set up a recommended TP-Link router? How to set up a recommended ASUS router? The wifi router does not connect to the network. Setup correct? The wifi connection speed is very slow and there a lots of disconnects. Password I cannot remember my password. What is my "Personenkennziffer"? What is my user name? Data volume How many data volume can be used each month? How many data volume have I already used up? How many data volume can I still use this month? How can I purchase additional data volume?