I just experienced the issue with Alexa and as a result I created a new Sonos account and tranfered to that - Alexa now works again (I know they've sorted it but I'd already done the switch).
When I log into the Sonos App I now get a message saying , Link Players To Sonos Account. I click Next and enter my new password and it tries to link. The attempt fails each time.
Is this because of a problem at Sonos' end? I've tried to log onto my account on the website but just get an 'Invalid URL' error so I suspect something is happening on the main site.
Anyone got any ideas?