HOW TO BE AN INSIDER OF GROUNDED GAME?

[_Shiny_]

Hello everyone, i really want to be an insider of this wonderful game but i can't find the way.
Can someone explain me how to be an insider? 
Don't link me terms, blogs, general discussions, programms about it. I tried all of them and i can not find Grounded on my app "Hub of Xbox Insider" so basically i can't join the Insider program.
Now, i will send a ticket, but this covid slow the answers and then i don't want to recive answers like "hey, you just have to follow the program".
The problem is that i can't find Grounded on my Hub of Xbox insider so i can't try to send the request, also i can't find how to be an insider.
Hope someone will answer me...

[David Vázquez]

Hello dude I found this link un the Official web of Grounded, i dont know if You still having that problem but I think this will solve it https://grounded.obsidian.net/news/grounded/grounded-xbox-insider-flight-and-steam-game-festival-begin-june-9th