Leviton Switches and the SmartThings hub

Years ago I set up a bunch of zwave Leviton switches to a Vera Lite hub. The system has never been that reliable. I have two four button smart switches (VRCS4-M0). One only works half the time. I also have a single button smart switch from Leviton that has to be pressed twice. Does anyone know whether the SmartThings hub is compatible with Leviton and possible the four button smart switch?