Hi @javonica86,
Thank you for choosing QuickBooks Online! I'm here to help you integrate Square banking with our system.
There's a process you need to follow so you can bring your sales transactions into QuickBooks automatically. You'll need to connect your bank account to bank feeds first, then integrate with the third-party app.
Also, please bring over products and services that aren't listed yet in QuickBooks. For detailed instructions on the process, visit this link: Connect your Square account to QuickBooks Online.
If you've followed the suggested steps above and the error persists, drop a comment below. I recommend including a screenshot of the result for a much more accurate resolution.
Please note you can disconnect an app linked to your account too. If you need to cancel or change your subscription, you can access the Intuit App Center. For your reference, check out this article: Disconnect an app and change subscription.
I'm always around to lend a hand if you have other questions related to banking or sales transactions. Take care.