Sorry to hear that your bank feed has stopped abruptly. I would recommend contacting our Customer Success Team to investigate this further with back-end tools.
How to contact us:
In your QuickBooks Online, click the Help menu in the upper-right corner.
On the Search tab, click an article and select Contact us at the bottom. Then, enter the details of your concern.
Choose how you would like to connect with them: either via Callback or Chat.