Hi,
     While working on the project Secure Identity and Access Management trailhead I was asked to use 2 factor authentication app and the project was successfully completed.I have uninstalled Two-Authenticator app from my mobile.Now when i try to login,I was asked for code where the app is uninstalled in my mobile.So i have tried to install app and get code,but in the mobile app to get it activated I was asked to scan the QR code,now the problem is more critical.
     I couldn't login because Two-Factor is activated for my login.
     To get the code,the app was uninstalled,To activate the app i need to scan QR code.
 
Please help me to solve this issues quickly.

 Thanks,
  Varshitha

While working on Secure Identity and Access Management trailhead i have used authenticator.
Now that i have lost my mobile phone which has salesforce authenticator, now i am not able to login to my org.
Everytime i am trying to log in, its restricting me.
i tried to contact saleforce using help option in mydeveloper org, but the help desk is not fuctioning as per the requirement.