Have you tried signing out of the app, then signing in again to see if it would recognize the new Beam?

Seen users found success doing that recently

Ahhh. Thought you’d cracked it, but unfortunately not. Signed out reset beam. Signed in, wired no, wireless no. It does actually see the beam with its mac code and I get the chime when trying wirelessly but it fails on the finalising part. 
 

thanks anyways. 
 

David 

The latest app version 80.01.10 now lets me install it to a degree. Then it needs an update to complete installation and fails again. Tried unplugging etc. Guess I need to wait for the next update to complete this install. At least it works on the TV kind of 

So they non update / register thing is a known issue that they are working on. 

Hi,

I've managed to do the update part  with the Sonos app on Windows or Mac (the one you have to install). 

It still doesn't work with a phone or tablet app

Hope this works for you 

Cheers

Did the update and still failed so eventually decided on a factory reset, a little bit of jiggling and eventually it got added. Having a little issue with the hdmi / eArc setting not wanting to setup properly (it seems to be working fine) but suspect its a TV issue rather than the app / beam issue. 
 

many thanks