TruePlay simply does not work in the new App

Hey I found a fix for this. Go on the Sonos app and make sure you have Spotify or Apple Music on it. Play about 10 seconds of any song and pause it, then go into trueplay and it’ll work.

I don’t have a Spotify or Apple Music account. However I tried your method using Amazon Music instead, and interestingly my Sub Gen 3 suddenly started the TruePlay tuning when I came out of Amazon Music. Although that was no good as it’s my Arc that I need to tune, and haven’t been able to recreate the steps again using Amazon Music. So it’s still not working.

This actually worked. Wow!

I have an Arc, two gen3 subs, and two era 300’s. After the update, they all disappeared from the new app. I did a factory reset on everything, and when trying to add the products back to the app, they would refuse to connect to my wifi. I had to use ethernet on the Arc and subs connected to a wireless bridge to get anywhere. I got stuck on an update loop where the app kept telling me to sign in as the system owner in order to do the update. 

After three hours on the phone with tech support, I got my products added but now trueplay doesn’t work correctly. They really botched this rollout. 

They really did. I got true play to complete successfully on one system using the tips above (played Apple Music), but the other system gets stuck after the walking round bit, it just won’t complete the process. The issues never end it seems,

Playing some Sonos radio and then trying again worked for me. Thanks!

I have the same issue. And the application freeze. I tried everything, deleted and reinstalled the app, deleted and reinstalled the system. It didn't solve the problem. I tried to call customer service, but the expected waiting time was 114 minutes... I didn't wait… I can't ask for a call back... I've never been disappointed with Sonos, but now I'm a little disappointed...

The fix posted by @Rdawkins fixed my issue, not sure why the fix works, but it does.

Thanks for the tip, but it didn't solve it. Trupeplay starts, but then the app freezes and exits with the error message. 
I tried several times. I logged out and then logged in, force close the app, etc.. Every time I got an error message.

After upgrading iPhone, experiencing same issue as others, failing at final step(walking the room) on Trueplay. My setup includes ARC + two ERA300’s + two GEN3 subs

I never had so many issues with a sound system. Sonos is clearly demonstrating their lack of quality assurance for the products they are developing, there is no regression testing nor is there accountability.  I am having the same issue of not being able to use trueplay with my iPad.  Sonos needs to step it up and address this issue in a timely manner.  
 

Note: I already tried all the things mentioned in this thread with no forward progress.  Time to return the system ( Arc, subwoofer and era 100) back to Costco.