I'm using Lumia 820 and want to shift the maps storage to SD card. For this I need to download Lumia Storage Check Beta. When I try to install it, I'm asked for my Microsoft Account password.
The problem is that in Username, it is showing
email@example.com whereas my Microsoft Account username is
firstname.lastname@example.org. The username can't be edited and my password isn't being accepted. How can I change the username of the Microsoft Account on my phone?