It's good to see you here in the Community, AdrienneRCS. I'm here to help and make sure you can use those keyboard shortcuts again in QuickBooks Online.

Have you tried accessing it in a private window? This will help us know if this is a browser or cache related issue. We'll use these shortcut keys to open one:

• Google Chrome, press CTRL  + Shift + N
• Mozilla Firefox: press CTRL  + Shift + P
• Internet Explorer: press CTRL  + Shift + P
• Safari: press Command + Shift + N

If the keyboard shortcuts works, then we can go back to your regular browsing window and clear it's cache. After removing some outdated and corrupted files, don't forget to restart your browser. This will also help to start the browser in a clean slate.

Alternatively, you can check and use other supported browsers that works perfectly with QuickBooks Online.

I'll be around and make sure we provide all the help that you need. Take care and enjoy a wonderful day!