Hey @bbquan and thanks for trying out the tidal-looper quark. It looks like that the tidal-looper is installed correctly. It would be helpful to see how your Tidal code looks like. When you have problems with the usage you should look at this thread:
But to your question how to debug the audio input:
Sure - there is a good chance that his thread will help you too:
If some of these answers helped you, I would be happy if you let me know what was missing in the README of the tidal-looper repository.