Students who took the ACT or SAT with a fee waiver are able to send free score reports. There may still be a glitch for low-income students who only took the ACT once, on a school day administration when the school paid for the test. I have heard they are working on finding a solution for this anomaly.
Remember: if you are on free or reduced price lunch or meet other eligibility requirements, please use a fee waiver. It can simplify some other parts of the college application process.