What Sonos devices do you have? How are they connected to your router? Which Sonos OS are you running on these devices? What device and OS is your device that you have the controller running on?

Sonos 3-5 each

Arc

Sub 4-1

sub 3 -1

Wireless… the new update on windows and iPhone 14 will not process… unplugged all devices two times 

plugged in Sonos 3 to modem and it did not update. 
??? please advise 

So, if memory severs, the PLAY:3s will all connect via SonosNet, which is created when one of them are attached to your router with an Ethernet cable, but the Arc requires a WiFi connection. The Subs are normally ‘bonded’ to another Sonos device, so once we get the device they are bonded to connected, they’ll be connected, too.

I’m making the assumption, since you’ve been running an Arc, you’re using the Sonos S2 OS on all devices.

Which version of iOS are you running on your iPhone? Which version of the Sonos controller are you running? What router are you operating? Who is your ISP? Are you running any port blocking software, such as VPNs, work profiles, virus protection/firewalls, etc? How is your WiFi set up? What channel is it on, which frequency are you using, what kind of security?

Have you tried wiring a different cable directly to your Arc, at least temporarily, as a test?

What did Sonos Support say, when you called them?