Sudden inability to connect with Spotify

I had had no problem connecting Spotify with Mu-So 2nd Gen and Mu-So QB 2nd Gen. Suddenly, although both show up in Spotify as available devices, and although the iOS Naim app prompts me to connect to Spotify, the connection does not happen. The Spotify app shows a blinking device icon with the message ‘Connecting’, but nothing happens. It is bizarre to me. I deleted and re-downloaded each app, but no change. I am not at all knowledgable about any technical issues. I don’t know all of the bits of this or that product or app. So if you might be able to suggest something, please do in the simplest language you can … thank you for that.

Well, after two+ hours and doing nothing, things are back to normal. I’m glad but mystified.