Ignition unable to read/write OPC UA tags

Howdy! I have an OPC UA server running on CODESYS. I am able to see tags in the Ignition OPC Browser but unable to read/write them in the Tag Browser. I am simulating the machines in Machine Suite 4 which is able to read/write to the OPC UA server. The ignition gateway OPC connection shows as enabled and connected. Strangely I can sometimes toggle the start and stop button only once when Machine Suite first starts allowing me to control the simulated machine, but the tag browser error shows the entire time and I lose control after the first toggle. Everything is running locally on the same computer. Is there something I likely configured wrong to make this happen?

Thanks!

Can you make the connection without security and then get a Wireshark capture?