I can't access my bank register because I get an error message "cannot read properties of null (reading 'getMonth'). I am not sure what means

Hello, @claudia36.

I'm here to share some basic troubleshooting steps to help resolve this. I want to make sure you can get past this error.

A cache-related issue could be causing that error message to pop up. Let's try accessing your QuickBooks Online (QBO) account through an incognito window to rule out the possibility of a webpage issue. 

Here are some shortcut keys to open an incognito window in all supported browsers:

• Chrome: Ctrl+Shift+N
• Firefox: Ctrl+Shift+P
• Safari: Command+Shift+N

If the error message isn't showing up anymore, I suggest clearing your regular browser's cache. This way, you can access QBO with a clean slate. You may also use a different supported browser.

Additionally, I'd like to know the name of your bank so I can check from my end if there are any related ongoing investigations.

You can browse this guide to enhance your QBO experience: Why is my QuickBooks Online slow?

I'm looking forward to your response. I'm determined to help you succeed.