Hello @Kos, welcome back!
I’m sorry to hear you are experiencing issues with the Sonos App Search and your Music Library not showing.
I would suggest some basic troubleshooting steps such as a quick network refresh by rebooting all the network devices (Unplug power cable → Wait a few minutes → Plug power cable back in).
Start with your Router → Sonos → Controller (Smartphone/tablet). You could also try force-closing the Sonos App and re-open to see if that makes a difference.
Sonos App acting slow, or getting search results slower than usual might be caused by wireless interference as well, you can have a quick look on the following Support article Reduce Wireless Interference if you’d like.
If nothing from the above resolved your issue, please reach out to our Support Team for some live troubleshooting.
They have tools at their disposal to provide you with information and advice, specific to your system and what it reports.
I hope this helps.
Haha. Best answers is this? Crtl alt del… I so much miss this old app.