Thanks Flag - that works for this part of my problem 
When I run the command “adb shell “/data/local/tmp/frida-server &”” from my C:/desktop/frida-server folder, I get the following:
> Unable to load SELinux policy from the kernel: Failed to open file ?/sys/fs/selinux/policy?: Permission denied
> Unable to start: Could not listen on address 127.0.0.1, port 27042: Error binding to address 127.0.0.1:27042: Address already in use
The first 2 commands seem to go through with no problems.
The first command gives me this:
> adb push frida-server /data/local/tmp/
> frida-server: 1 file pushed, 0 skipped. 357.5 MB/s (46351796 bytes in 0.124s)
Trying your adb shell commands, I do indeed get thee $ sign, even though I was running the commands as admin.
Finally, when I go ahead and try the “decorate” command, I get
> Unable to get frontmost application on Android Emulator 5554: unable to find process with name ‘system_server’
Meh :-/
So, when I was getting troubles, I typed in adb root; and this actually restarted the process in root, and now I am able to trace 2 functions.
Getting blobs when I am doing stuff in the ledvance app, however the localkey I was not able to find yet.
Anybody a hint how to “refresh devices”?
When I reset my bulb, I obviously cannot use the virtual android device to connect to the bulb, so I think I am doing something wrong here…