Thank you for sharing your experience with us, Andrew. I'm here to offer comprehensive support with your QuickBooks and PayPal account connection.
Have you encountered an error while trying to reconnect with your bank? I recommend verifying whether your PayPal account is experiencing issues connecting to QuickBooks Online (QBO). If there are no issues with PayPal, I suggest logging into another browser or a private window to try reconnecting.
On the other hand, PayPal transactions usually sync based on how PayPal sends new information. Some banks or financial institutions may only transmit new data every other day, weekly, or according to a different schedule.
For detailed information about automatic updates, you can refer to this link: Use automatic and manual online banking updates in QuickBooks Online.
After you have successfully downloaded your bank transactions, you can check out this article for complete instructions: Categorise online bank transactions in QuickBooks Online.
Don't forget to keep me informed if you have any further questions about managing PayPal and QuickBooks connectivity. I'm here to actively assist with all your needs.