Get your taxes done using TurboTax

Yes we live together but we are saving the baby's tax return and I have debt so I let my fiancé claim the baby so non of the baby's money gets taken because of my stupid mess. So, I didn't claim him and I told my fiancée to and then he went to claim him and his turbo tax got rejected. However I did my taxes in Feb and he is now doing his taxes.
So why is it saying someone claimed him but I didn't.