my recording was set for 180 minutes but stopped after 20 minutes
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.
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.