Hello @Todd_Phillips and welcome to the community!
So we can better assist you, please provide a brief description of your current setup using this link as a guide.
Make sure to describe your network configuration/topology, including any networking hardware currently in use, so we can have a clear understanding of how your devices are communicating.
Also, please let me know what version of Roon you’re running and what your default browser is. Roon should be opening the default browser to have you enter those TIDAL credentials, do you have another browser you can try?