Zerotier on WDMyCloud Mirror

Hi everyone. I would like to add to my Zerotier Network two devices WDMycloudMirror.

One of them runs firmware 2.12.127 in which I uploaded Zerotier but I am not be able to setup. I use Mac and I tried with the terminal: SSH admin@192.168.x.XXX but the answer was: “port 22: no matching host key type found. Their offer: ssh-dss”. Any ideas how to go in?

The other one is MyCloud Mirror Gen2 runs Firmware 5.06.115. In this one I can’t upload WDMyCloudMirrorGen2_zerotier_1.4.2.apkg the answer was “it is not possible to upload this applications. Check your network and try again”. Any ideas? Thanks.