Unable to remove surround speakers

Try unplugging the Arc and Era 100s from power for about a minute. Plug them back in, restart the app, and try removing them as surrounds again.

That didn’t work- I am also not able to remove the SUB from the surround setup, so it seems it’s a software bug? 
 

Would hard resetting the ARC work- and reinstall everything?

Resetting the speakers is a last resort. Try unplugging the speakers AND rebooting your router and phone first.

It’s amazing the hoops someone has to jump through to attempt to get your system to work. Unplug speakers, reboot router, reset phone, open front door,close door, etc.  It shouldn’t be this hard to do something simple with your speakers. This app is very frustrating and I am thoroughly convinced that it was never tested and call the Sonos CEO a liar for saying he’s been using this new app without problems since December. 

I have hard resetted the ARC- added the SUB successfully and now I am unable to add the ERA 300’s as surrounds… 🤯

So now I have no surrounds anymore.. 🙈

Good job 👏 I will remember how you did this for the future 

The only thing now is that it seems it doesn’t save the “Trueplay tuning”.

Also solved, somehow my SUB was in the 180° fase setting, this must be 0° otherwise SONOS doesn’t

save the Trueplay tuning.

Similar issue here. So, once you removed the Sub, you were able to remove the original surrounds and then replace them with the 300s and reconnect the Sub?