Connecting to c.whatsapp.net:443... Connected successfully OUTGOING: <stream:features> <groups_v2> <identity> <presence> <privacy> <readreceipts> OUTGOING: <auth> mechanism=WAUTH-2 passive=false user=(my phone number...) INCOMING: <stream:start> from=s.whatsapp.net INCOMING: <stream:features> INCOMING: <challenge> Content of type challenge length: 20 OUTGOING: <response> Content of type response length: 47 INCOMING: <failure> <not-authorized> There was an IO error: Connection closed by server. Connection closed. Stopping timers. Freeing up the connection. Freeing up the socket. Yappari will retry the connection in 10 seconds.