May I know if you receive any specific error messages when entering data in your QBO account? That information will help me find a timely solution. Also, make sure that your device meets the minimum required QBO operating requirements. This is to help avoid any problems when working with QBO. For a detailed guide, please visit this link: System requirements for QuickBooks Online.
Once confirmed and you still experience the same issue. Let's determine now if this is a browser problem. There are times when the cache and cookies in your browser may be corrupted which leads to navigation issues in QuickBooks. To get started, open your QBO account in a private mode to have a clean slate. The following are the shortcut keys you can use:
Google Chrome: press Ctrl + Shift + N
Mozilla Firefox and Microsoft Edge: press Ctrl + Shift + P
However, if the issue persists, I recommend contacting our technical support team to further investigate the underlying cause of the issue. They use specific tools to pull up your account in a safe environment.
Also, I encourage you to visit our QBO Help page, so that you can browse articles or even questions from other QuickBooks users answered by QuickBooks experts. This will help you with your accounting tasks.
Feel free to get back to me if you need further assistance accessing your QBO account. I'm just a post away to help. Have a good one.