Change Outlook Headings/info

When the shop reinstalled Outlook 2013 they entered some of my ID info misspelled. I get my email with no problem, but the posted misspelling changes the name or ID I use.
How do I reset it? The shop just tells me no one sees it. If I see it, others do also. And why would I ID myself, then hide the ID?

This is basically what I see (unedited.) I want to change the first part.
R******<re*******@*******.net

Thanks

 

Look if this helps you.
https://support.office.com/en-us/ar...e89-6a9b-467b-8865-d5633fcacc3f#changepopimap

 

OK, all I have to do is find file and then account settings.
I'll look again later

 

Blind as the proverbial bat?
I haven't found "file"

 

You can also go into the control panel and mail. Start (the Windows round ball in the bottom left), Control Panel..Mail.