No one here would know how Jackson Hewitt prepared your return. You say you went online and filed, I hope you did not send in another return.
You can use the IRS amendment form (1040X) & manually amend. Amended return must be mailed.
1040X form
<a rel="nofollow" target="_blank" href="
https://www.irs.gov/pub/irs-pdf/f1040x.pdf">https://www.irs.gov/pub/irs-pdf/f1040x.pdf</a>
1040X instructions
<a rel="nofollow" target="_blank" href="
https://www.irs.gov/pub/irs-pdf/i1040x.pdf">https://www.irs.gov/pub/irs-pdf/i1040x.pdf</a>
If you need to amend a state return you can check your states website for their amendment forms
