I reset default twice and input new one still the same Authentication failed. I watched video and follow step by step and the same results. Please help. Thank you.
Did you do an IPTV Reset when you were logged out of Kodi? If you're certain that your configuration is 100% accurate, exit Kodi, login to the Donation checker, click IPTV Reset and logout. Wait at least 15 minutes and start Kodi.