if you give us the complete rejection message maybe we can help.
here are the rules for who must file
Who Must File
Form 8615 must be filed for anyone who meets all of the
1. You had more than $2,200 of unearned income.
2. You are required to file a tax return.
3. You were either:
a. Under age 18 at the end of 2019,
b. Age 18 at the end of 2019 and didn’t have earned income
that was more than half of your support, or
c. A full-time student at least age 19 and under age 24 at the
end of 2019 and didn’t have earned income that was more than
half of your support.
(Earned income is defined later. Support is defined below.)
4. At least one of your parents was alive at the end of 2019.
5. You don’t file a joint return for 2019.
These rules apply if you’re legally adopted or a stepchild.
These rules also apply whether or not you’re a dependent.
These rules don’t apply if neither of your parents were living at
the end of the year.
Support. Your support includes all amounts spent to provide
you with food, lodging, clothing, education, medical and dental
care, recreation, transportation, and similar necessities. To
figure your support, count support provided by you, your
parents, and others. However, a scholarship you received isn’t
considered support if you’re a full-time student. For details, see
Pub. 501, Dependents, Standard Deduction, and Filing