I have a Beam (gen1) (Main Bedroom) with One (gen2’s) & Sub Mini and that’s Trueplay tuned okay, but my iOS device here is on iOS 18.1.1

I also have a Beam (gen2) (Kitchen) with Era 100s and Sub Mini and that TP tuned okay too. 

IIRC, they also TP tuned okay when standalone, but that was with an earlier OS - so perhaps see what happens when your unbond your Play:1 surrounds and just see if that works. Then rebond the surrounds back and give the HT setup another try.

Also ensure you remove the case/cover from your iDevice - I just used an iPhone XR, FWIW.

Note if the problems persist after unbonding/rebonding the surrounds then it maybe best to reproduce the issue(s) seen and immediately submit a Sonos system diagnostic report from within the Sonos App, note it’s reference and contact/chat with Sonos Support Staff via this LINK and see what the Staff can perhaps suggest to help you to resolve the matter.

Hi,

thanks, tried it but no result so far. 
I cannot reach the beam…it behind the tv. Is there a way I can switch that off in the app?

then I will ask a family member to help out. All these noises …. Simply cannot handle that, sorry.

If you want the front channels louder then you can use the ‘TV Level’ slider control in the Sonos App, but ideally I would do that after unbonding/bonding the surrounds and trying TP tuning again.

https://support.sonos.com/en-us/article/change-surround-audio-settings

Thanks, will try tomorrow again. 
I wanted to switch the tv sound (on the tv settings) to ‘tv’ but that keeps automatically switch to the beam. 
For now I switched off the tv. 
I don’t have the option to set the tv level. No slider…

sorry. I feel stupid. Worked perfectly in the former home, so I know I wasn’t that stupid once 

Ha ha - the ‘TV level’ slider control is in the Sonos App HT settings (assuming you have bonded your surrounds correctly) - "Settings/rBeam room name]/Surround Audio" - see screenshot attached. 

Ah. That is helpful. I do have that screen. But I translated that to adjust the level as in louder + or softer - . Who came up to use those signs for front or back (there are rules, Sonos!)

It’s perhaps best described as a balance control for the TV audio between the front and rear channels.

The other slider-control, just below it, is a similar feature for Music Audio, but that has an additional option of using Ambient, or Full, stereo sound for the rear speakers. I ‘mostly’ use Ambient, as I prefer the music soundstage out in front of the listening position.