Is the Infscape Appliance for Raspberry Pi 4 an officially supported product?

Hi there,
I wonder if the appliance for Raspberry Pi 4 is discontinued and/or not officially supported? Because the Raspberry appliance is only available in a dated version from 2020 on the Developer Blog. Besides that I do not find any Raspberry appliance on the official download site UrBackup Appliance Download – Infscape Backup Software , so I have some doubts. Could someone please put some light on this?
Thanks in advance.

No, it is not officially supported.