WH-1000XM3 failing to pair with macOS (it is not even discoverable in bluetooth settings)

simple steps does not work https://helpguide.sony.net/mdr/wh1000xm3/v1/en/contents/TP0001867146.html

To start pairing Headphones , press power button for several seconds (about 7).

I found solution that helped me:
https://us.community.sony.com/s/question/0D50B00005kn3GA/unable-to-pair-wh1000xm3-with-mac-mojave-os-sony-support-docs-only-reference-earlier-versions-of-mac-operating-systems-am-i-out-of-luck?language=en_US#0054O000007uGjsQAE

Quote from forum:

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Hello, I think I have the solution. this is for the latest version of Mojave. it's in this macworld article: https://www.macworld.co.uk/how-to/mac/fix-bluetooth-mac-3682642/ - this is the one that worked for me, but they have other options if it doesn't:

Using Finder

1. Open Finder.
2. Click Go.
3. Click Go to Folder.
4. Type in: /Library/Preferences
5. Click Go.
6. Find the com.apple.Bluetooth.plist file.
7. Move the plist file to the Trash.
8. Click Go > Go to Folder
9. Type in: ~/Library/Preferences/ByHost
10. Click Go.
11. This time find com.apple.Bluetooth.???.plist file (this will be made up of some random letters) and move it to the Trash.
12. Now restart your Mac - it will automatically generate new Bluetooth plist files the next time you turn Bluetooth off and on again.

After I did this it took a few minutes, at first all the bluetooth commands were just digits but after about 1 minute the headphones showed up and now they work. 

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to initiate pairing I pressed power button for several seconds (about 7 seconds).