Hackers Help: Why does my ALGOT wire mesh basket not fit?

I am trying to install an ALGOT closet system inside my second bedroom closet and I am not sure if there is a problem with the product itself or I am missing something but the installation doesn’t seem to be secure and everything seems to be dangling and loose. So I have the bracket, pull out rails and mesh baskets and the wooden shelf. The brackets seem to be lose and so does the pull out rails. I am attaching some pictures .. please help!!

ALGOT wire mesh basket algot_1a ALGOT wire mesh basket ALGOT wire mesh basket

Thank you