Audacity not recognizing audio input device

I just successfully installed (I believe) Audacity 2.3.3 on My MacBook Pro running macOS Catalina Version 10.15.4. Audacity doesn’t recognize (and record from) my cassette tape player using USB Audio Grabber (Model # AV202-B), although the Mac apparently does (System Preferences > Sound > Input > USB PnP Audio Device — I see the “Input level” actively bouncing). On the Audacity Audio Host Toolbar I set the Recording Device on the Audacity Device Toolbar to “USB PnP Audio Device.” Following the directions for Catalina at viewtopic.php?f=47&t=107162 I opened Applications > Utilities and double-clicked on Terminal. There was no dialog, but rather, the following message: "Last login: Wed Apr 15 15:18:54 on ttys000 The default interactive shell is now zsh. To update your account to use zsh, please run chsh -s /bin/zsh. For more details, please visit administorsMBP2:~ jlindvall$”.

I am trying to convert some valuable audio cassettes to mp3. I’m a school teacher using a school-owned computer assigned to me. Due to the coronavirus, my access to our IT department is limited. Any suggestions?

Ensure that the cassette player is connected and working before you launch Audacity.

What is the default recording device in Audacity?
Can you set the cassette player as the default recording device for your Mac?

I am using Catalina 10.15.4 and Audacity 2.3.3 The software used to work, but since my computer upgraded to Catalina, Audacity does not seem to recognize or hear sound from the computer mic or using an external H2 zoom as a mic. I am not a high level user. I really only use this software for some very basic analysis of guitar sound. I am not sure what to do now. Hoping someone can help me.

When Audacity 2.4.0 is released next month, upgrade to that version. Audacity 2.4.0 is properly supported by Catalina.

In the mean time, Audacity 2.3.3 should work if you use this workaround for the Catalina problem:

I have just installed Audacity 2.3.3 for use with a cassette recorder (iMac with Mojave 10.14.3).
I am unable to record (flat line) and when I go to System Preferences>Security and Privacy> Microphone, Audacity does not show up as an app for allowing mic access. I have re installed Audacity but with the same outcome. Cassette recorder set up before starting Audacity etc. as instructed and should level activates when I check the sound under System Preferences.
Any advice as to why Audacity does not show up as an option under microphone in System Preferences?
Thank you.

Did you get Audacity via the Audacity website:

Are you sure that your version of Mojave is 10.14.3?

Thanks for your response.
Firstly - no I am NOT using Mojave!! Sorry about that.
I have Catalina 10.15.4.
My version of Audacity came with the product - the cassette recorder from the supplier.
Thanks for any assistance.

Can I add to my earlier post- I have found the notes concerning the Catalina release and the advice regarding the use of the Terminal work round the Catalina problem. However, when I type in the recommended command. I simply get the message " No such file or directory". I confirm that Audacity is located in the Applications folder.

That version is probably too old for Catalina.
Uninstall it (drag the entire application to the recycle bin).
Then get Audacity 2.3.3 via the links on the Audacity website:
Carefully follow the instructions on that page to install Audacity,

When it is installed, you should see an Audacity icon in the Dock. Right click on it and select “Open”. Catalina may not want to run Audacity, but tell it that you’re the boss and run it anyway.

Once you’ve got Audacity to open, quit Audacity (completely). Easiest way to do that is “File menu > Quit”.

Then try the workaround.

Bingo! I am now up and running. Many thanks for your assistance ( and patience).
Will there be a permanent fix for this in the near future?

Next month, all being well.

I have been trying to troubleshoot audacity for the last couple of days of using it on a Macbook Pro running macOS Monterey 12.0.1. My tape recorder shows up on the USB device as being recognized by the laptop but every time I start up audacity it will not recognize my device as being hooked to my laptop. I can get it to recognize it sometimes and other times it will not show up in the menu bar.