One of my sales locations in Square is not synching whereas the other two are. Have you had this issue and how did you solve it?

As I know, you need to have a 3rd party paid connector app.

Thanks for sharing a detailed description of your issue, letstalk. I'll provide troubleshooting steps to help you sync the new location with Square in QuickBooks Online (QBO).

Let's disconnect and reconnect the app to refresh data connection and resolve syncing issues. 

Here's how:

1. Select the Bookkeeping menu.
2. From the Transactions section, choose App transactions.
3. Go to the App settings, then choose Square.
4. Select the tab for the setting you want to change.
5. Click on Disconnect Square, then Done.

After that, you can now reconnect the app .

Additionally, you'll want to check out the Square app FAQs for troubleshooting tips and guidance on using the app effectively for syncing financial data with QBO.

If you need help with adding new locations to Square, please let us know. We are here to help you achieve your goal. Have a good one.