Proseries basic is calculating a credit for a 23 yr old dependent college student. The child tax credit is not checked and this is the only dependent. The dependent is listed in the first dependent box. There were 3 sons at one point but two have aged out and are no longer dependents.
Fix it manually if you need to, I had a client with 2 dependants over 17 as soon as I removed one of them the recovery rebate calculate credit for the second one (19 years), so I had to adjust it manually by multiplying $500 * # of dependant remaining.