Can my son who's tax return was rejected by turbotax free online and not able to fix be redone by him on the turbo tax home addition i purchased and resubmitted?

Why was it rejected?

He put the incorrect AGI but is unable to go back and correct it and resubmit

Why can't he go back and correct it?  Does he not have a Fix it now link?

He did not get a link to be able to fix it.  He logs back in and it will not let him fix without doing it all over.

Not sure if there is a way to get the link or if I should just resubmit on the paid version?  Is there any issue with resubmitting on the paid version?

He doesn't have to do it all over.  All he has to do is click Federal>>File>>then go through those steps.

If you downloaded or bought the disk you can file up to 5 returns.

The online version only allows one return per account.