Do DSLR's work with this software?

i am very frustrated, I own a Canon T5i and 80D. neither of them work with i-stopmotion! When I hook them up all I get is a black screen saying the camera will not work with the preview function? I have tried all the tricks and bypass’s i have researched to no avail. Why would they not make this software work such popular cameras? Seems most of the blogs I read, folks have the same issues. So my question to anyone is how can I make it work, or what type or model of HD Camera will work good on this platform? My USB camera works perfect! The preview, and all work awesome but it’s not a professianol image. Thank you