Was able to finally bypass this issue since none of the official suggestions worked for us too (and really didn't want to delete the whole return). Even though our children are not in undergraduate yet, I checked yes - put in their elementary school name for college, left college number blank and put $0 for tuition. This let us get past the loop to the next steps. Then we were able to go back in later and uncheck the box stating that they were in undergraduate. When the return was finalized there was no mention of them being in undergraduate.
