It could be in your spam box...
you cannot get their email or password because they change it everytime they get onto their account
change my password
To change your password 1) Click Forgot your username/password? 2) Enter Your Usename & Email 3) Than Click Rest Password 4) After that Go To Your Email. 5) & Than Check To See If You Got A Email From Roblox.
You are able to select a 'forgot password' option when logging into Roblox. Before you press that button, you need to make sure that your account is verified. To do this, go to the Roblox settings, then click 'add parents email.' Here you can add your, or a parents' email address. Once this has been confirmed, you will be able to reset your password. If you haven't verified your email, then there is nothing you can do...
If you have lost your password, then go to the log in page. There should be a link that says, "Forgot your password?". Click it, state your given email, and account name. A reactivation email will be sent to you. However, If you have not put your email beforehand, you will not be able to recover your password.
There are several companies are offering password recovery product and services. To recover different type of password you need a different password recovery tool.
you need to use password recovery option of gmail.com. To use this open gmail.com and click on "Can't access your account?" it will send you on password recovery page submit username here and proceed, if you have alternative password recovery email address then password will send on that email ID but if you don't have, then you have to fill a form which will ask some question related to your email address, after filling that form your password will recovered.
you go to your profile page and look up your account info and scrool down were your password is at .there should be a link that says change password .click the link and delate your password and put in a new password
If you have entered a valid email them click forgot my password then it will email you the password.
Follow Google instruction on how to do this.
Verifiy the email in ROBLOX
Just manipulate them into giving them your password. It's simple. You can try email spoofing them and pretending to be ROBLOX. Or you can infect them with a keylogger. There are numerous ways on how to successfully hack an account on ROBLOX.