Let's Debug

Test result for dkaraus.ch using http-01

Fatal
No valid A or AAAA records could be ultimately resolved for dkaraus.ch. This means that Let's Encrypt would not be able to to connect to your domain to perform HTTP validation, since it would not know where to connect to.
No A or AAAA records found.

Submitted Aug 17 14:11:15 2020. Sat in queue for 2ms. Completed in 3s. Show verbose information.