My ex took the child stimulus this year but IRS is stating I received it, she is also claiming all children. Should I put 0 for amount of stimulus I actually received?

I am now divorced this year and filing head of household, my ex has filed separate and claimed all 3 children. I personally never got the stimulus, she took it all but IRS is stating I received it. She didn't work hardly last year but I worked all year and paid for all the medical, housing and for the kids.