Only Left Channel Active

Windows 10 SW 2.0.3
Unable to record stereo even though SW is set to stereo… Only Left channel recording, Right channel Null.
This is from a USB based cassette capture device named EZCAP…
Any help would be appreciated.

Are you sure there’s stereo on the tape? Are you picking-up any tape-hiss on the right, or is it just "digital dead silence?
Have you plugged headphones into the cassette player to check both channels?

Or maybe, the EZCAP is defective?

Left channel is completely mute. no hiss no noise
Headphones play stereo correctly
Yes. Stereo Cassette installed.

Device may be defective…

Check in the Windows Sound Control Panel that the device is set for stereo recording.