For this issue, you need to try reconnecting your account using a private browser to help us determine if this is a browser-related issue. Let's confirm first using your browser's private window. Here's how:
Google Chrome, press CTRL+ Shift + N
Mozilla Firefox: press CTRL+ Shift + P
Internet Explorer: Press CTRL+ Shift + P
Safari: press Command + Shift + N
If you're able to connect your bank account using a private browser, you may need to clear the cache of the regular browser you're using.