Board Thread:Roblox help and discussion/@comment-37739274-20181207011939/@comment-35998649-20181208025948

FoxyTheGreat wrote: I Would Suggest Using The Microsoft Roblox App. Applecherry10 says that they are using a Mac, which doesn't have the Microsoft store on it.

Going back to the question, since you already sent a support request to Roblox, I would just wait for them to reply back and to let them help you (give them a few days, it isn't going to be instant so be patient).

In the meantime, you can go into Roblox Studio and change the render settings. To do this:

File -> Settings -> Rendering -> GraphicsMode (change it to whichever is compatible with your Mac) -> save those settings and then try opening a Roblox game again.

I would also just lower the in-game graphics to the minimum that it can go.

If that doesn't work, it may just be showing its age.