I have the 4 Digital IO ports in use on my Cerbo and I could see graphs on when a state was on/off or running/stopped on VRM, but today all I see is "no data available" including any previous dates where I had seen graphing.
The Digital IO ports are still working and I can see in the Remote Console the state and changes, and also in VRM I see data in the "Digital Input Summary" which reflects the state of the IO correctly.