my recording was set for 180 minutes but stopped after 20 minutes
I experienced the same and solved this by setting Stop on Silence (in DVR Settings) to No. This does mean you have to manually stop the recording yourself however.
Please provide debug logs as per https://www.jaksta.com/support/windows/technical/jaksta-media-recorder/how-to-generate-debug-logs-6000009063
Please dont paste in progress logs.