I appreciate you reaching out, @RODOLFO_GOMEZ1!
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.
Was Roon previously working with TIDAL or is this your first time trying to link your TIDAL account?
Have you tried rebooting your Core machine since this error has occurred?
Thanks!
Dylan