MuseSounds Manager Issue on Chromebook

Hello! I have not been able to successfully download a sound from the library with the new MuseSounds Manager. I have followed all of the instructions for installing the manager itself. Maybe a few hundred megabytes and all I get is this unknown error. It's not because of my Internet either. (It worked better two years ago on this Chromebook when it was MuseHub; shortly thereafter I had gotten rid of MuseScore and Linux for space. I am trying to make a comeback and the MuseSounds Manager is not welcoming lol.) How do I even troubleshoot this?