Hello @veew, welcome to the Sonos Community!
I am sorry to hear you are having trouble tuning your Sonos Era 300 with Trueplay and also experiencing issues with the Sonos App.
There are a couple things you could try:
- Make sure everything is up to date - Update your Sonos speakers.
- Reboot everything to refresh the network connections with the following order - Router → Sonos → Controller (Smartphone/Tablet)
If the above didn’t resolve your issues, then please reach out to our Support Team for some live troubleshooting.
They have tools at their disposal to provide you with advice and information, specific to your system and what it reports.
I hope this helps.
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