I have an Indiegogo era TO, and the video matched my hardware exactly. I have a Kingston UV500 mSATA SSD installed which works fine (did not need the pin 3 disabled like some older disks). In the UK you can get these SSDs from Novatech at decent price.
I had to move the posts and screws as described in the video. Did you not have posts, or screws, or what exactly was missing?
I also did not have this issue, but I think elsewhere on the forum there were issues like this, perhaps only with certain builds, and juggling cables was required.
Could you possibly post a photo of your board? (Or, as above, contact support)