To change the email attached to your MV account:

1. Go to your drop-down menu
2. Settings 
3. Locate the section named "Account" 
4. Click "View".  
5. Then, locate the section named "Email", here, you will be able to enter a new email address (make sure that it isn't one already in use on MV). 
6. To save your changes, enter your current password and hit <Save>.
   
   To change your shipping address:
   1. Go to your drop-down menu
   2. Settings
   3. Locate the section named Shipping Address  and click View
   4. Enter your Shipping Address and click "Save"
   
   When purchasing a store item, the address saved in your settings will be auto filled for shipping. (You are able to edit it,  any changes you make in that shipping modal will update the shipping address in your settings.)