Welcome to Community, mariadwyer.
Allow me to share some information about connecting Square with QuickBooks Online.
When you connect Square to QuickBooks Online, it will automatically import your Square sales invoices, taxes, tips, and discounts. Here's an article that you might find helpful in learning more about connecting QBO to Square: Connect your QuickBooks Online to Square.
The square app is a third-party application that can be integrated with QuickBooks Online (QBO). That said, it is best to contact their support for further tips and recommendations.
If you decide to use our Online Banking feature to track and categorize your transactions, you can check this article for a guide: Connect bank and credit card accounts to QuickBooks Online.
I'll hear you out if you have any other concerns regarding your apps or processes in QuickBooks. Just reply here and I'll get back to you as soon as possible.