Of course it works with Windows 10 :)
You progress log snippet above indicates there is nothing plugged in to the line in that you have selected, or that it is not outputting sound. You only want to record from a line in if you have a stereo system or something plugged into your computer.
If you want to record from an application (like spotify for example) then you need to select Application in the Settings > Audio Recording > Audio Recording Method drop down. The image below shows spotify being captured on Windows 10.
If you are receiving popups about jaudiocap not being configured for injection or SecureBoot being on, then you must follow those instructions on how to rectify.
Please also check that the application you are trying to capture from is in Settings > Audio Recordings > Apps
You can also record all sound that you hear by selecting Settings > Audio Recording > Audio Recording Method drop down > (Stereo Mix) What you hear
If you are still having issues then please provide debug logs as per https://support.jaksta.com/a/forums/topics/6000051704.