living with partner under 25 with a child

Hello, I was told I was entitled to 85 percent of my childcare as I'm under 25 and living with partner but not married. I was also told that his income wouldnt affect my maintaince loan but today when I contacted sfe i was told it could affect my maintenance loan.
Looking on older threads SFE advisors were telling a lady in my exact same position ( under 25 living with partner and her child) that his income wouldn't affect childcare grant and a child tax letter would be sufficient to prove the child is supported by her financially. Which is what I provided. yet I've been told his income was taken into account. And that I'm no longer entitled to any help. I need urgent advice as we have had our child in nursery and cant afford to pay the full amount?

thank you