I purchased this and also paid for installation by Wayfair.  The directions were incomplete, and no means of anchoring the unit to the ground was described, and no hardware was provided.  The installer followed the directions, but things had to be improvised.  I had to pay the installer to return to furnish and install anchoring devices and to provide additional bracing to stabilize the unit.   Hopefully his additional efforts will be enough to keep the structure standing, but this could be a very dangerous situation.  I contacted Wayfair, and they think the installer is responsible, but this is a design flaw/oversight flaw that should be corrected.