If you don't experience the same thing, go back to your regular browser and clear the cache. This will remove the stored cache or cookies to refresh your browser's background process. If the same thing happens, use another supported browser. It could be that the one you're currently using has a temporary issue.
Here's a great source where you can find articles that can help you in managing your books in QuickBooks, please visit our Help articles page. This includes topics such as reconciliation, track income, and expenses, run reports, etc.
Keep me posted if you have any other QuickBooks-related concerns. I'm always here to help. Have a great day ahead.