That's what I thought. Thank you guys so much for the clarification!

I claimed everything and paid for more than 50%. He was using the FSA to offset his portion.

UPDATE: He is now saying that his CPA want me to file an amendment to my return to not claim the credit which would make me owe $600 and he would reimburse me. ...

His argument is that the children lived with him at least 50% of the time in 2016 since we were together for 11 months of that year. However, we agreed in the b...