Some tags inaccessible through a Gateway Network Realtime Tag Provider


I have setup a Realtime Tag Provider via a Gateway Network but some tags are inaccessible. Some tags say “Uncertain_InitialValue”. And some other ones are UDTs but they don’t expand to show the tags within the UDT. I am using the latest build (8.0.6) and have also noticed the OPC tag browser doesn’t work.

Has anyone had the same issue?
thanks in advance