Retirement tax questions

1099R for RMD distribution box 7 checked.  Spent 2 hours on phone enrolled agent who concluded error in software and said he would notify up-line of issue.  Not resolved to date.  I have no transactions  that would cause additional taxes on schedule 2 line 8.  I agree with the calculation of AGI, Deductions, taxable income and taxes but not other taxes.  Agent said calculations were correct in his pro version of software.  Thank you for your response.