Thanks for your quick answer. Finally I could set-up one wifi lan. Firts I shared my phone wifi and could use this network activate max2play. After that, I scanned wifi networks again and my 2,4GHz SSID was discovered. Not the 5GHz SSID.
Now I and using this 2,4GHz SSID. My phone discovers 4 SSIDs and Max2Play only 2. I do not know if the built-in adapter is compatible with 5GHz networks. Do you know it?
Now I am experiencing problems starting the squeezebox server. The message is always the same „Trying lo launch… NOT successful. Detailed information sudo: no tty present and no askpass program specified“
Thanks for your help.