My Winnebago 2015 Journey also has the Riverpark system. We had trouble with it locking up all of the time. Dealer put a new unit in and it is great! Sadly dealer was Camping World so they didn't get everything quit right. Pulled the unit out and corrected some connection. Also, the Wi-Fi dongle was defective which Riverpark sent a replacement. Would suggest you contact your dealer. I have found Riverpark tech support to be very responsive.
One other thought. My unit would start doing weird things after it was on for about an hour. Because of where it is mounted it overheats. I added a 4" muffin fan and is now solid no matter how long we use it.