I advise to go buy proper anchors in a DIY store to mount your projector on the wall, those provided had me look a bit weak and only suitable for solid walls. Feel free to put three plugs each capable of supporting more than the weight of your projector for more security, especially to be more reassured.
Regarding difficulty climbing the stand as I read in some reviews, this is a universal support and therefore logically not right for your projector. So it makes sense that the assembly should be adapted, and be a (little) handyman can actually help, but it must not exaggerate: I rode in 15 minutes, it's as simple as a small cabinet Ikea, to give an idea.