From another post:
Windows10Universal.exe is the name of the executable for the Microsoft Store version of Roblox. RobloxPlayerBeta.exe is the name of the executable for the normal desktop version of Roblox downloaded from the website.
Cited from https://gaming.stackexchange.com/questions/390234/robloxplayerbeta-vs-windows10universal
1) You can try re-installing Roblox and re-installing it via Microsoft Store
2) You can reach out to Roblox Support via https://www.roblox.com/support (this is an Azure Community Support forum and Roblox is not supported).
If this is helpful please accept answer.