Just for information, and I appreciate that this mere fact is not of much help to many, but my Sooloos on my QNAP core continues to work with Tidal. If anyone who understands the changes that Tidal have made at a technical level has any observations or theories about what may explain this I would be most interested. Is it, perhaps, that my IP address has not changed and at least one of my several devices has always remained logged on to Tidal (which includes my Roon core as well as my Sooloos core)?

Cinema/Music: Trinnov Altitude32 8-16,218,Cloud 4 channel, Marantz UD5007,DSP5200SE(2+C),DSP3300(4),DSW(2),271,MShort Ceilings,AppleTV 4K
TV: Marantz SR7013 Wharfedale Diamond 9x4+Celestion(C)
Music: Roon,i7NUC8gen,QNAP TS253A, Sony Scala, MS200, Garrard DDQ650,Wharfedale Diamond 12.3
Kitchen: AD88 (bluetooth via i80).