My linked bank on the "Bank transactions" tab has an infinite loading spinner on it. The "Update" button is greyed out. If I re-link the same account, success but spins

Hello morgan-attainus-,

Thanks for connecting with us here.  Welcome!  Having a constant looping, when trying to update your transactions in QuickBooks Online, can have a negative impact on your day.  It's essential that you're able to upload your transactions effortlessly.  I would be glad to help!

If you haven't done so already, I suggest clearing cache on your browser.  In addition, I recommend trying other browsers such as Firefox, Google Chrome, Safari, Edge or a private/incognito window.  If you experience the same result, I encourage you to contact our Customer Care team at 1-855-253-1536 from Monday to Friday between the hours of 9 AM and 8 PM EST. With your consent, they can connect with you virtually and review the issue in more depth, and escalate it for further investigation with our Development Team, if necessary.

If you have any other questions or concerns, please feel free to reach out again.  We would be happy to assist!