Need to remove faceplate to reprogram at new house

Not new to Ring (I installed a RingPro and several spot cams at last house) but just bought a house that has a Ring Doorbell already hardwired in by previous owner, but even after extensive searching online, I cannot figure out how to unmount/remove face plate on this thing to reprogram onto my Wifi/Account. There are two screws on bottom rear two corners...do I need to have a tool to unscrew those? Help please.