Did either of you factory reset them? 
 

Have you seen/followed this guide: https://support.sonos.com/en-us/article/transfer-your-sonos-system-to-a-new-account

Thankyou for your help but still struggling. Graham(my son in law) has the old Sonos Beam gen 1 and two Play 1 speakers. I now have a new Gen 2 Beam and 2 Era 100 speakers which all three are onto my system and work and set up as expected. Graham has my old Beam and Play 1 speakers and has downloaded the Sonos S1 app as well as the current one. But he cannot get into the settings section as it wants to detect devices first. That is where we are stuck at the moment.

These old items I have given to Graham are no longer showing on my app as they have been unplugged and replaced by the new items although I can see their registration details still assigned to me when viewing my products on the main desk top Sonos Link, but again there appears to be no obvious way to deregister these items from my ownership. mmm…

The items in question were purchased from Sonos between July and November 2018

Were you using S1 or S2? If S2 he’ll need to set them up as S2, then downgrade to S1. Has he factory reset them?

Used S1 I believe

In two posts I have asked if the speakers have been factory reset. You still haven’t answered that. 
 

You also don’t say whether he has followed the guide I linked in the first post. 
 

And you are unsure whether you, when you had possession of your speakers, used S1 or S2.
 

I wish you good luck in resolving this, but I don’t think there’s anything more I can suggest. Maybe, if you can be bothered to answer these fundamental questions, someone else will step in and help. 

can you give us a walk through process to factory reset the beam for starters please

There’s a link to that, in the guide I sent you in my first post. 

you said - “In two posts I have asked if the speakers have been factory reset. You still haven’t answered that. “

He has said he cannot seem to do the factory reset thing which is why I wrote to you asking for a walk through process as to how it should be done. I will persevere but I think his day job is preventing him giving this his full attention,

I advised that the speakers were purchase in November 2018 and he has downloaded the S!7S” Sonos App and used that as far as I am aware.

I am, we are very grateful for your help with this so far and of course we are bothered. Graham is a tech manager for a busy telecom company so should be savvy on most of this stuff but just can’t seem to get past first base with it at the moment. I will try to talk to him rather than all this keyboard stuff.

Thanks Nik it is appreciated and I realise how frustrating it can be at times,

Cheers - Roger