Thanks very much to all!
My problem turned out to be in the nature of having too many irons-in-the-fire….The earlier Tidal app on my iPhone was occupied somehow (Still not too proficient with this stuff.) by an old trial account that was abandoned before it got fully functional if that makes any sense. I ditched that app and downloaded it again, this time being able to log in with the account particulars from the iteration of Tidal that my Node 2i is using. Still some intermittent WiFi bugs to be addressed but it works very nicely in the car after a network reset with my cellular service.
My problem turned out to be in the nature of having too many irons-in-the-fire….The earlier Tidal app on my iPhone was occupied somehow (Still not too proficient with this stuff.) by an old trial account that was abandoned before it got fully functional if that makes any sense. I ditched that app and downloaded it again, this time being able to log in with the account particulars from the iteration of Tidal that my Node 2i is using. Still some intermittent WiFi bugs to be addressed but it works very nicely in the car after a network reset with my cellular service.