Hi there, Jenn. Thanks for reaching us in the Community. Let me share some information about connecting your Power BI in QuickBooks Online (QBO).
When you connect Power BI to QBO, please know that QBO is not supported by Power BI connecting natively. For the tables to show, you can consider connecting Power BI using connectors.
You can go to the QuickBooks app menu, and then search for Power BI. This way all connectors that are affiliated with QuickBooks will show.
In addition, you can refer to this article to learn how to personalize your reports in QBO: Customise reports in QBO.
Comment on the post if you still have concerns about connecting your Power BI in QBO. I'm always here to help.