Sinvce the OP's RV spent a few months as a rental before they bought it chances are a prior renter was a total jerk and changed the passwords. In this case a factory reset will be required even if the OP has the manual with the UID and PW. Also, If I'm not mistaken the factory set UID and PW are located on a table inside the dome of the Winegard Connect 2.
US Army (Ret)
2020 Entegra Accolade 37TS
2019 Jeep Grand Cherokee Trailhawk (Toad)
FMCA - F432054