If Roblox Marketplace is not working or loading and you see If you are having trouble loading Marketplace message, then see this post.

But it doesn't stop there, after its done loading its installing Roblox thing, it goes off my screen and doesn't let me in game or show up on my screen again.

Roblox outages have peaked at around 11am and have been slowly decreasing since. However, some fans are still complaining online that they're struggling to load the game.