I keep trying to fill out the EIC form, but it keeps telling me I don’t qualify because I’m not at least 25, but I am 25. I made more this year and getting less this yr.

What was your age in 2018?  Is it correct in the personal info section?

To make it easier for you to determine

1. You (or your jointly filing spouse) must have been born on or before December 31, 1993.

unless you have dependents.

I corrected.  I assumed she did not have any.  

made more this year and getting less this yr.

Don't look at just the refund, but rather your total tax liability. The new tax law lowered withholdings.