Elephant
instructions are on their site.
I'm not exactly sure what the heck you have there. Looks like just short of two kits.
The strut assembly should be captured the same way it is in a factory setup, with either a roll pin (Bilstein inverted) or a gland nut (non-inverted.) One thing I've learned over the years on this site is that there's several strut configurations, and they don't interchange. Looks like you have gland nuts for internal threaded spindles, external threaded spindles, and maybe even a pair of press-fit ones for factory Bilsteins.
The green assembled strut on the right side of your photo looks like a Bilstein insert for a non-inverted type spindle, which is super confusing, but looks like those are supposed to pair with an internally threaded spindle / externally threaded gland nut.
I don't know why your spindles are divorced from the rest of the housing, maybe that's older than what I'm familiar with.