I’m not sure if this is anything related to what I am going through, but I have removed my cookies as of now and a couple of days ago.
Currently, I have been dealing with a persistent individual or bot of some sort that is getting Roblox to disable my 2-step verification without any prior email or any changes other than that. Upon going to Roblox, my account is locked out and the original email or password do not work. By using my phone number to regain access, I can clearly see that someone has gained FULL ACCESS to my account to change my password and the email. This has occurred twice now where they gained full access to my account.
I have never dealt with anything like this before in my 12-years of playing. Could this be someone that cookie logged me? I also use Firefox so not sure if there is something else about the browser.