Hello again 
Would you be trying to install it on a disk that used to a Windows partition or some sort of dual-boot with Windows? ntfsprogs is usually needed for dealing with the Windows ntfs filesystem, and we have seen a report of something similar in such situation:
We probably should rather try to get you up and working on Rockstor 4, however. What kind of issue did you encounter while trying the WSL? We have seen reports of difficulty with WSL & WSL2, such as here, so maybe you are seeing the same. Alternatively, it seems the easiest route in Windows for the time being would be to use VirtualBox and run a Leap 15.3 VM in VirtualBox.
Hope this helps,