I can help you connect your bank in QuickBooks Online (QBO), niekampconst.
Before we begin, may I know what financial institution you're trying to connect with? Any additional information would be greatly appreciated, as it will enable us to provide you with an effective solution.
Let's perform troubleshooting steps by accessing your QuickBooks Online account in a private window. This will help identify if a browser issue is causing the unexpected problem when connecting to your bank.
Refer to the browser keyboard shortcuts below:
Google Chrome: Ctrl + Shift + N
Mozilla Firefox: Ctrl + Shift + P
Microsoft Edge: Ctrl + Shift + P
Safari: Command + Shift + N
You can use other supported browsers aside from logging in through incognito mode.
Also, you'll have to choose a bank from the Chart of Accounts (COA) when enabling a bank account in Manage Accounts dropdown to connect your online banking for bank feeds.