Adding a email/phone Is important. Roblox is warning you that even if a issue does occur you will have back up. These warnings include things that happen that’s not even your fault. I think sending a email to Roblox support saying: my account has been logged out with out my knowledge and I have no associated email or phone liked to it. I would appreciate if you could g give me any advice on how to get my account back…
I think this may help but again I am not totally confident.
This story has happened to me before it didn’t get logged out by itself but I logged it out, and I forgot the password because it was like a month later and I couldn’t log in Roblox support didn’t help me at all. So I M not totally confident if it will work.