Nc charitable deductions

When filing my NC state tax return  for 2021 can I deduct a total of 600.00 of my charitable contribution if I am filing married Filing jointly?  The program show 300.00. Then says check this entry. It’s a showing up on line  12 B of My NC state tax return  I am filing form 1040 taking the standard deduction on my federal and state taxes  and it is under line 12. I believe it just wants me to change it to $600 but I don’t understand why the program is not picking it up correctly if I am filing correctly. I have cleared my return and started over and it says the same thing both times. Thank you for any help