Received a new Smartshunt 500a and hooked it up to the RV battery which is connected to a Battery Tender. Downloaded the software and the installation went without a hitch. Today, I've no bluetooth connection. Disconnected the “Vbatt+” cable, reattached it and the blue and red LED lights simultaneously flash 3 times, then went blank. Tried two other phones and the software doesn't work. Anyone have any ideas on what my issue may be?