if you are using the same mac, then use the same serial number you just created for kodi... same serial, same mac, and see what happens
so use the new mac address on the stb emulator with same serial number I created in Kodi in the app? In STB emulator I can use 78 mac instead of 79? I did change the last four of the mac of the old mac address at the 66.iptv66.tv site.