Idk why it's doing this. Please answer so I can release my game. I think it's something with start place, but I don't know how to remove that.
This is happening because you're not publishing the place, you're saving it to the cloud. When you want to publish a change to your place in Studio, make sure you go to File > Publish to Roblox, or press Alt + P.
go to configure place, version history, change it to the latest one above all versions.