I prepared a tax return that includes a Form 1095-A & Form 8962. The return shows that client was to receive a Premium Tax credit and that credit amount was part of the amount of Federal refund due the client as indicated on the Tax return summary sheet. I run a final review for errors. An error popped up asking me to check the box showing that the client is a dependent or not a dependent of someone else. The client is not a dependent of anyone one. Soon as I checked that box the refund suddenly changed to a different amount lower than the original amount. Fortunately, I did not submit the return before detecting that change. I tried all I could but could not find a solution to explain why the program was behaving in that manner. I need immediate help. Thank you.