Where is this Edit menu you mention, please? I looked at the article you linked, but it looks like the screenshots are from a previous version of QB, because my account looks nothing like that.

I can't find any Edit menu, or anything called Preferences anywhere.

I do see that I'm able to add a Gmail address, but this doesn't help me since I'd prefer to use my domain-based email address with my actual company name so my invoices look more professional than if they're using a free email provider address.

Appreciate any assistance you can offer. Thank you!