At this point, you really need professional guidance. An LLC with an S corporation election is required to file a Form 1120-S and that form was due March 16th of this year for the 2019 calendar year (i.e., your S corporation return is late).
Further, you did not pay yourself a reasonable salary and that is generally required in the case of shareholders who are essentially employed by the corporation. In conjunction, quarterly tax reporting forms are required to be filed and they obviously were not.
You always have the option of revoking your S corporation election, but you should definitely consult with a tax and/or legal professional.
See https://www.irs.gov/forms-pubs/revoking-a-subchapter-s-election
