Thanks for bringing this to our attention, Smiley3. I know how essential it is to have a seamless integration between the Square App and your client's QuickBooks Online (QBO) account and I'm here to help you resolve this issue promptly.
I've noticed there are several reports similar to your issue. It appears this matter needs further investigation. For tailored assistance, our phone support team is well-prepared to address with situations like this. They have the capability to screen-share with you and investigate this in real-time.
Here's how you can reach them:
- Head over to the Help menu.
- Go to the Search tab, then click Contact us.
- Pick a topic or enter your concern, then select Continue.
- Choose Chat with us or Have us call you.

Furthermore, I've added these articles to learn more about organizing your transactions in QBO:
Remember, the Community is always available to address your questions about integrations, Smiley3. Feel free to return to this thread whenever you need, and we'll respond promptly. Stay safe and have a fantastic day ahead!