Before anything else, I'd like to know if you've encountered any error messages while connecting your bank to QuickBooks. This way, I can provide you with an accurate resolution to your concern.
In the meantime, I recommend logging in to your bank's website to check for any alerts, notifications, or updates about ongoing maintenance. If everything works well on the bank, you'll have to manually update your connection using incognito or another supported browser if the account is already linked. If you're still in the process of connecting or linking your account, you can connect it using incognito or other supported browsers.
If the issue persists, I recommend contacting our support team. They have the tools to review and pull up your account in a secure environment.