Hi,
May I ask what solutions you have already tried to fix the issue in your game?
Is your Roblox installed from the Microsoft Store or the Xbox app? Please check the library of both apps if you have the game installed.
In the meantime, please try uninstalling Roblox again, restarting your device, then installing it through the Microsoft Store or the Xbox app.
Please let me know how it goes. I look forward to your response.
Stay Safe!