You cannot pay yourself a salary as a Single Member LLC, unless you made the S Corp election.   You cannot deduct any payroll expenses on a schedule C.    I would suggest you consider making a late S Corp election and back date it to when you started payroll in 2020.   Hopefully the IRS accepts it.  Otherwise all of your payroll would be treated as income, except the taxes  you paid.   Contact your payroll provider to see if they can assist you on the payroll issue, before you file your tax returns.   You may need to file an extension on your taxes till the issue is resolved.