@9567465348cc I think you can do this by tapping on your profile icon and clicking on my profile. You should be able to adjust and update the information and user names. Also I think there is an option to update the avatar and tag names.
@Jeanieva I know some post have said that they are doing some updates to their towers. Looks like they are expanding and making their service faster. I know my device keeps jumping back and forth in it's service.