I have taken my time to read about IPTV and Game Master since I started subscribing to TPK back when it was free. This knowledge has helped me get through the transition to Game Master and I understand how to set IPTV up on different apps. It kind of frustrates me to see people who have had it for years and have no idea how it works, but that's just me. I don't think everyone needs to become an expert, but it does benefit from knowing the difference between the playlist url, epg url and Xtreme Codes, and what to do with them. I find it frustrating trying to go through hundreds of posts here and on various forums trying to gleam information like which server to use when it's all gummed up by people who are saying they've had this service for years, but do not have any idea as to how to configure their apps when they do have the correct urls or sever information. I'd recommend doing some basic reading and learning at least how to set up your services, for when things change.
That being said, please do not take offence or think I'm attacking anyone. I'm not. Just stating my point of view, and I won't go on about it. I do not claim to be an expert or preaching from a higher ground.
I do want to share some info for those who are having trouble configuring their apps to the new server Game Master is using. I found an app on a Filelinked store that is actually configured for Game Master, just like the official GMX app. It's called Extreme Live TV Pro, and it's easy to set up. All you need is your login and password for Game Master. Filelinked store: 79809828 and PIN: 7196. Download the app (it's the second one in the list) and open it. Choose the second server (it didn't have a name or graphic on my phone) and enter your username and password, and you have your service. At least it worked for me on my android phone. I haven't tried it on my android box and probably won't. I don't know whose store it is - I'd give credit if I did, and I don't know how long this app will work, but try it if you don't know how to (hopefully yet) set up your service. This app appears to be preconfigured to Game Master and it works on my phone at least. It should work on your android box's and hopefully your Firesticks (I don't know for sure because I've never used one before). I hope it helps some people, desperate for their TV.