I want to make a few changes to my profile. But for some reason I’m not able to change my name, email or birthday. How can I do it?

There are some parts of  the user profile that cannot be edited by users themselves. They are the name, email or birthday. These details can be only changed by the site administrator. So if you want to change these details alone or make a correction in them, you need to request your site  administrator to make that change. All other parts of your profile can be edited by you.