I just bought a cassette to MP3 converter, but when I go to System Preferences-->Audio--> input, it keeps appearing and disappearing. Audacity won't recognize it at all. The player itself works, and I tried using a different cord that I know is reliable, but it still hasn't made a difference. I'm currently syncing my iPod using one of the USB ports I tried, so I don't think the problem is there. When I tested the tape player it was plugged in to my computer for power, so I'm thinking I will try to find some batteries to see if that makes a difference. Any other ideas what the problem could be? I'm running Catalina, 10.15.6.