If you have never put their products together you might miss this until the unit falls apart on you, but they failed to supply you with, give instructions for, or emphasize that you need glue for the application of the wood doweling that holds the drawer container and top of unit together. Get a good wood glue tube of your own before tackling this project and allow plenty of time for it to dry before turning the unit right side up.
They forgot the glue.
If you have never put their products together you might miss this until the unit falls apart on you, but they failed to supply you with, give instructions for, or emphasize that you need glue for the application of the wood doweling that holds the drawer container and top of unit together. Get a good wood glue tube of your own before tackling this project and allow plenty of time for it to dry before turning the unit right side up.