When I try to install this I get
Resolving updates.mydevices.com (updates.mydevices.com)… 54.148.225.117
Connecting to updates.mydevices.com (updates.mydevices.com)|54.148.225.117|:443… connected.
ERROR: The certificate of updates.mydevices.com' is not trusted. ERROR: The certificate of
updates.mydevices.com’ hasn’t got a known issuer.
I can find similar problems reported on the forum, but no fix that works for me (RPi time is correct)