ReadItemValue Error - by: PythonByte

Guys,
My app has a server (SLIKDA) and a client QuickOPC 5.59. I see my tag registers fine and I get a handle, when I try to read the value I just registered using the following line:
Tag.Value = m_opcClient.ReadItemValue(m_MachineName, m_OPCServerName, Tag.ClientTagname)
I get the attached error, and the inner exception message shows:

Cannot connect Data Access client (timeout).
+ The client method called was 'ReadMultipleItems'.
I am running everything on the same machine (Windows Server 2019)

I can however connect to my server using the demo VB.NET project your provided, and I can also read and write to my tags

Thanks