attaching ring device to wall bracket, there is nothing to hold the ring on the bracket,

attaching ring device to wall bracket, there is nothing to hold the ring on the bracket, the vodeo on the ring site, shows a wall bracket with small attachments to click the device on the bracket, the one tah came with my ring 3, does not.. there is not a way to keep the ring device on the wall bracket. I want to install the system before I go away, this is very disappointing. thanks, lyfsongs