Thanks for post your question here. I want to ensure you're able to view your register in QuickBooks Online.
One possible reason you're not able to access the View Register is you're not the Company Administrator. In this case, you'll need to contact the Master Admin so they can add you as a new user.
However, if you're already a user but still the View Register isn't showing, you'll need to perform the basic troubleshooting steps, which is to open the browser in incognito/private mode. This means it doesn't use the existing cache data file to load a webpage.
Here are the keyboard shortcuts to open a private browser: