Audio Connection and SampleRate

Greetings. I purchased a Dansrue Super USB Cassette Capture unit and downloaded Audacity per the instructions manual. Error message when attempting to audio capture. So went to my Mac audio system preferences. The USB PnP Audio Device shows as one of the devices on the left temporarily, then disappears. Anyone know what’s up?

Unfortunately those “super USB cassette” players are notoriously unreliable, especially on Mac
(Example: "Super USB Cassette" - Google Zoeken)
Do you still have the receipt?