So, none of you have stipends and it is a group project for class. See my original answer. They’re not going to have the same priorities as you and, if you’re going to work with a group, you need to accept that.
Throwing mountains of documentation at them isn’t going to work. Talk to them and find out what it is they are finding difficult. Break it down into more manageable chunks. Rough-code it and work out the details when they have a big picture to work from. Or whatever it is that makes sense given what you’re doing.