First the 21 day is only an estimate based on the NORMAL processing times but we are not living in normal times. At not time was the refund guaranteed to happen in 21 days as TT has no control over how long the IRS will take to process the return.
Next the audit protection package you bought ... this only helps if you actually get audited. Right now the return is being delayed in processing and is not being audited. If they make corrections to the return due to the recent tax law changes and/or the stimulus credit then again those are not audits but corrections. Now m once you get an letter of explanation of the changes you can use the audit protection service to understand the changes if you don't understand them yourself.
