Do you know if your preparer is legitimate?
There are clues:

If you pay anyone to prepare your return, they MUST have a PTIN
(Preparer Tax Identification Number).

The PTIN is formatted as P00000000
an eight digit number preceded by the letter "P".

If you suspect your preparer was not a legitimate paid preparer,
take a look and see if they put their PTIN on the return.

Look for the section called "Paid Preparer Use Only".  Look for the box with the heading PTIN
The number in the box should be a P followed by 8 numerals.