3rd Party Connection through OPC-UA

I have a project that reads tags from a couple of PLC's rockwell & Siemens via the default OPC-UA feature. im trying to make those same tags available to a 3rd party software though OPC-UA. to do this i have modified the Server settings endpoint address to and when i do this or make any changes to the server settings it faults the OPC -UA and in turn stops ignition from reading from the connected PLC's
is there a way for Igniiton to read from PLC's and also make tags readable to other software at the same time.

There's probably detail on why in the gateway log. Have you looked?

Keep in mind that if you change the security settings, Ignition's own loopback connection (to itself) might have to be updated, too.