How do I know my account URL?

Hello - I'm brand new to Articulate. My boss set me up with an account, and I received an email with an account URL to my Outlook inbox. I copy/pasted that into the Account URL field in Publish and get an error. Looking at the URL, I can see that Outlook has added some text and substituted ASCII characters in the URL. I read another tutorial about changing my URL, but when I go into Settings I don't have the option for Other Settings as demonstrated so I'm unable to change the URL. My predecessor at my job is gone, and with him all knowledge of Articulate/Storyline, and my boss doesn't work the Storyline side. I need to figure out my Account URL to publish some lessons - quite literally 'yesterday'. Please help.