Bit off topic, but the TLS certificate seems to be wrongly issued to the wildcard *.kasserver.com, which seems to be a back-end related domain for a German hosting company with strong mid-2000 vibes named "ALL-INKL.COM" [1].
They even have a full-blown SOAP API to manage their services [2].
Fun 10-minute rabbit hole :)
[1]: https://all-inkl.com [2]: http://kasapi.kasserver.com/dokumentation/