It's better for me to activate 2FA for my account in Rollbit and log in my account on computer to play games. I don't feel safe to login my account on a smart phone that has my 2FA too. It is like I do all things on one device and it's so risky. I perhaps worry a lot about it but prevention and carefulness are better than carelessness.
This is the risk exposure we are talking about it here but many take it lightly and then regret later on.Some have also not enabled 2FA security features while those have enabled it they use the same device where they have authenticator download to get the code and login on the same device so what if it's compromised? I also recommend different devices for security but you should know how to handle them as well.