Thank for the input. @dewdev was correct, pump replacement did not fix issue. I put in a ticket with Oliver and sent Mike video of flow. He said I will need to go to a service center for further troubleshooting. I am currently on the road so trying to figure out on my own. I did some additional testing and can't get water from the freshwater tank or from boondocking port (with valves configured for boondocking). I have removed and cleaned all fittings from water tank to pump. No leaks found. I isolated and drained Truma Aquago.
Looking at manual @topgun2 recommended, I confirmed valve configuration. I see check valves at freshwater tank fill and city water inlets. Could a failure of one of these cause air leak and pressure failure? How do I access these to check or bypass?