I have a Spotify account for about 18 months, I always use it with Sonos. In the past few weeks I have serious connection problems with Spotify. The Windows or iPad app indicate buffering/network problems. Tracks are skipped, etc...unusuable.
I contacted Sonos, they had a look at my Diagnostics and the say: "In regards to your Spotify issue. Looks like it is any account issue. Listed below is a black listed error. Meaning the account was tried to be accessed to many times with too many failures and now has been locked out.
too many failures, blacklisted service 2311
I would recommend contacting Spotify."
Today, about two hours ago I had the same buffering problems again.
What is this? I restarted my network (turned every thing off, the modem on, router on, Sonos ZP120 on, etc... still problems..).
I (from Holland) use the Ziggo network 50/5Mbit/s
Sonos ZP, Sonos S5, Arcam A28, Monitor Audio RX6, Ziggo network, iPad, Samsung S3 mini