sonos one not responding with Alexa command

I have owned a Sonos One for 6 weeks and it has built in Alexa which only works occasionally. I won’t respond to my command “Alexa play **” or “Alexa turn on *” it will play the announcement from another Amazon device such as a dot.
It is also not always allowing me to play music from my phone.
It shows in our Alexa app.
So far I have done a reset and it worked for a day or two.
Many help would be greatly appreciated.