Hello,
I’m the packager of duplicati for asustor.
The problem is solved for IngoM, he simply had to update mono certs as stated on SSL TLS support in Mono · duplicati/duplicati Wiki · GitHub (there was a TLS error in the logs).
I’ve requested asustor that they include a regular update of the certificates in mono.
Since the autoupdater works pretty well in most cases, I don’t create a new package on each duplicati relesase.
Regards,
Cyril