I've got Alexa on my Sonos speakers. All of a sudden, Alexa will listen (speaker volume lowers), the light will flash, but there's no action on simple things such as "volume down" and "stop". Everything used to work fine for a year, but now nothing.
I've tried all the usual, remove Alexa, re-add, re-install skills, reboot speakers... Again, this happened all of a sudden, without me changing anything.