You can activate the new PC whit the license key you have. I assume, that you have a StartAllBack license for Windows 11? If not, when you upgrade your key, it will work on Windows 10 and 11.
I connected my pc to a 4K Samsung tv. I installed StartisBack. The picure above Richard is blank. If i change the resolution to 1080p everything is ok. Can this be fixed? See Screenshots. First screenshot is in 4K and second in 1080p.
Installed StartisBack ++ 2.8.3