Control Surface not responding. Help

I just bought the app but I can’t connect it to my Ipad 4. I’m on mac with Catalina. Status is “v.0.0.0 live Connection Surface not responding”. Can you help me? I tried also to choose the correct path of ableton during the installation of the server and it gives me "Successfully installed to live 0! " I have Live 10.1.4.
Thanks