era300 missing in app

There’s not a lot to go on in your post. But once bonded to a soundbar, they are a part of the room that has the soundbar and surrounds as a single entity. 
 

If that doesn’t answer your question, please expand your explanation of what’s happening. 
 

Does this have any relationship to your post a few months ago? 

You did get some answers then - with requests for clarification - which you couldn’t be bothered to respond to at that time, so we also don’t know if or how that issue was resolved. 

Very hard to reply without internet I’m mot that type of person ok ty it does now its setup should I hear anything in the rear rra300 watching normal tv or just movies

thanks guys

appreciate the help

Depends on your source, and your TV. If they’re sending surround data to your Beam, Arc, or Ray, then yes, a pair of Era 300s will play sound data. A single Era 300 will not. 

If a program is sending a 5.1 (Dolby Digital or Atmos) to your TV (many programs don’t), then your surround channels would be active. Test using a recent movie on a movie channel, but never YouTube, as it’s infamous for downrezzing to stereo.

The Sonos app shows you what is is receiving on the page that represents the room your surround system is set up in. Stereo or PCM 2.0 means no sound from the rear speakers.

Not all movies are broadcast in surround format so don’t expect surround effects just because you’re watching one. 
 

Your profile doesn’t show what country you’re in. In the UK, for example, there are only a handful of channels that support 5.1 transmission.

Hard to set up Sonos without internet, it is required. As indicated on the box when purchased. And honestly, I’m not sure how you’re responding here, since access to this forum also requires internet. 

Had internet when I set it up

ill put my question another way

 I add 2xera300 all goes good until I  use connect surround sound that goes good going back into app tells me family room needs attention I notice the 2 era300 say not connected 

‘this is the problem I have

also once setup should I be hearing sound  from them just watching normal tv or only on movies

ty guys for your help

Does the Playbase support era300’s as surrounds?

Did you add the Eras to your existing system, or have you created a second system?

If the Eras are stereo-paired you need to un-pair them before they can be added as surrounds.

Are there any coloured LED’s showing on the Playbase or the Eras?

 
Your final question has already been answered above. 

You are using it with the Playbase that shows on your profile?
https://www.sonos.com/en/shop/era-300