Good evening, @LavaLandscapeCo. 

Thanks for following up on this thread. Allow me to share some information about having a PO Box. 

At this time, QuickBooks Online doesn't offer the option to have a PO Box. The Physical Address cannot be a PO Box message is a default reminder that QuickBooks accepts only a physical address. 

For additional information on how to change email or business info, you can check out this article: Update business and account information. 

If you have any more questions, please don't hesitate to comment below. I'm always here to help. Have a good rest of your day!