Do you have some balance on your account? If you dont, better to forget your account and stay away from megadice. They do not respond your emails, I believe you wont get any responses from them here in this thread as well. Take a look at the rep's last online, it was on July 3rd. Means that he is not active in thie forum for more than 3 weeks now. The only thing you can do is to wait. Anyway, dont they have a feature like "lose my 2fa"? Afaik most sites has this feature so users can reset it easily.