Sonos Beam + Alexa: "Didn't find any smart home device" issue

All my Sonos devices show as offline in the Alexa app , also when I ask Alexa to play music. Eg Alexa play planet rock radio she repeats my request as if working normally the. Says sorry that device is offline

Can you try rebooting these devices, allowing each to fully boot before moving to the next:

Router

Any wired network switches

Any wired connected devices

Any wireless connected devices

Rebooted router

Rebooted 2 x wired network switches

Rebooted room 1 (1 by 1 ) - Beam / Sub / 2 x Ones

Rebooted room 2 - Beam

Rebooted room 3 - Move

Rebooted room 4 - One

Rebooted room 5 - One

Unfortunately still doesnt work with same message

Then for good measure disabled sonos skill and deregistered all devices from amazon alexa , removed alexa from Sonos via S2 app and then re enabled skill and enabled alexa on s2 app.

Still broken ….. Alexa on Sonos will reply to any qustions i ask her but will not control any devices or start any music services

I submited another diagnostic - 1756944783

I have also contacted amazon who said I can also see from our side that you do have everything successfully set up and connected to Alexa’ but will refer to their advanced technicians

So i stupidly decided to factory reset one of the ones that was on its own, now the Sonos app cant find it and I am unable to add it back to my system.

Really wishing i hadnt taken part in the beta as that seems to have borked my whole system - at least from when i reverted back to the non beta software

Have finally managed to get the Sonos One connected back , had to turn off all other speakers other than the move and then connect to home wifi setup, took an aged to get sorted - Alexa stil dwont control any devices or start services on that speaker (or  any other one) either so im out of ideas as the possible things I can try to fix it

Add me to the pile with this issue

Turns out the issue of connecting the speaker back can be resolved by turning off routers 5ghz channel then turning back on afterwards.

the issue with Alexa and Sonos control seems to be linked to how they communicate , seems it’s beta related (even though beta replaced with current release software) and likely to be fixed with a Sonos update in a couple of weeks.

I have created a new Alexa account and linked to test and that works fine so just waiting for software update to fix so I can use my main Alexa account.

support were helpful but did just get to do everything I had already done to try to fix it so just ended up wasting another hours of my time, I had told them what I did but guess they don’t trust you to know what you are doing 

Tried this on mine and it didn’t fix it. Will have to wait for the update I guess. 

Has the update been completed?

Is the update for Alexa, Sonos or something else?

I purchased the Sonos Beam today and have the same issue.