How to add different AGI box for married filing jointly

Annie

My spouse and I have been filling as married filing jointly for years now. When we get to the AGI box usually under my name it’s the AGI number from last year and my spouse is zero. This is our first time using Free Tax USA and they only give us one box for the AGI so I put the AGI number and it was rejected because my spouse is supposed to be zero. So we re-filed using zero but it also got rejected because my AGI now doesn’t match. How do I get an AGI box for each of us to put the different numbers to get accepted? The only way I seen to have a box for each person is to say last year we filed married but separately (which we didn’t)

How do we fix this and add the second AGI box?