How do I re-use my account information on Kindle app? I downloaded the Kindle app from the Play Store but I uninstalled it after trying it out because I went tested other ereaders as well. The problem is, when I decided to settle for the Kindle app. I downloaded it and there was no option to log in. Only an option to Register. Thus, when I "Registered" again with the same account information I used before, my device was dubbed "My Name's 2nd Android". I also lost my first @kindle.com email and it has now been appended with some numbers. Is there any way to get around this?
To get back your @kindle email address (assuming someone else hasn't acquired it in the meanwhile), browse to Amazon.com and navigate to Your Account > Manage Your Kindle > Manage Your Devices > Personal Documents Settings (this last link is rather less than obvious, below the panel showing a photo of a KF).  There is a link there to edit/change the KF's email address.  You can do this from any computer; it doesn't have be done on your KF.