Waterproof Gartenbox -finger away!

As previously reported by others:

There are quite a few "pieces" broken during delivery, for me now, unfortunately, still just a corner
There are no assembly instructions, which would have been very important because of the many "tabs and slots"
But flaunts a yellow warning sticker with "No, 2" plan - which should tell me?
The "noses" have a barb, once used incorrectly - end area.
The box is neither "easy" to build, yet they could be taken apart again, at least not intact. How should we send them back then?
With only 4 larger and 2 smaller parts I would not have expected that there are so many difficulties.
For this, the walls are so thin that one but a third hand still needed to stabilize the whole thing in the assembly. If it is because at some point and acts on the walls, no pressure, they may work in order to retain your shelves etc. can put up I would not.