Roblox may be crashing or encountering errors such as settings not saving, due to third-party antivirus, cache, and other factors such as network connectivity. One solution is to create a new user account that has its region and language set to English.
There is no 'save' feature in Roblox, but individual games can incorporate a save when they are created.
0:209:36[Roblox Studio-05] Save and Publish your Roblox Experience - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo we click on file up here in the corner. And then you wanna click on save to roblox as okay soMoreSo we click on file up here in the corner. And then you wanna click on save to roblox as okay so press that.
Make sure your game is published (File > Publish to Roblox) to enable Studio access. From the Home tab, open the Game Settings window. In the Security section, turn on Enable Studio Access to API Services. Click Save to register your changes.