Hi.
Seems like problem with refresh app list in CasaOS/ZimaOS.
People report (this is also my experience), that new apps (and new versions of old added apps) are not shown in app list, although there are in github. This problem some poeple resolve with reboot OS, but I found, this is not guaranteed. Sure is to stop CasaOS services and start in specific order! This refresh app list.
Scrypted is available in Big Bear CasaOS repo, so this is available also for ZimaOS. There are some differences- ZimaOS is closed source, only x86, specialized HW - zimaboard, management of disks etc. But repos works in same way.