The numbers in this part of Brian´s ino (pasted below) have not changed the last 12 months, so I dont think they need to be altered.
Do you allow all the needed ports to be open in router setup?
Or is it a Windows 10 issue like mentioned in Bug in UDP communikation
// ethernet interface ip address
static byte myip[] = { 192,168,1,77 };
// gateway ip address
static byte gwip[] = { 192,168,1,1 };
//DNS- you just need one anyway
static byte myDNS[] = { 8,8,8,8 };
//mask
static byte mask[] = { 255,255,255,0 };
//this is port of this autosteer module
unsigned int portMy = 5577;
//sending back to where and which port
static byte ipDestination[] = {192, 168, 1, 255};
unsigned int portDestination = 9999; //AOG port that listens
// ethernet mac address - must be unique on your network
static byte mymac[] = { 0x70,0x69,0x69,0x2D,0x30,0x31 };