Hello again, iambethlea.

Thanks for your prompt reply and for clarifying out your concern. I'd like to point you out to the right direction for this issue.

We want to ensure this won't happen again, so to review your setup, I recommend reaching out to our Customer Care Team. They have more tools available to investigate what's causing your credit card transactions from Square to stop coming in and resolve it. 

Please take note that our support hours for QuickBooks Online Plus, Essentials, Simple Start starts from M-F 6 AM to 6 PM PT and Saturday 6 AM to 3 PM PT. For the Advanced version, we're available any time, any day.

Here's how you can reach out to our support:

1. Click the Help icon located in the upper right-hand corner.
2. In the Search window, click the Contact Us button located at the bottom.
3. Enter your question and click Let's talk.
4. Choose either Chat with us or Have us call you.

If you have the new QuickBooks Assistant help update, you can follow these steps:

1. In your QuickBooks Online account, go to the Help > Assistant.
2. Type Talk to a human and enter what do you need help with.
3. Click No if none of the articles shared are helpful and select Chat with us or Have us call you.

You can also get our direct phone number through this link: QuickBooks Online Support.

For more details about synching with Square, please check out this link: Sync with Square.

You're always welcome to post a reply on this thread if you have any additional questions or need help with other task in your account.