Let's perform basic troubleshooting steps to identify this behavior. To start, you can access your QuickBooks Online through a private browser. This is a special mode that doesn't leave browsing history.
Press Ctrl + Shift + N (Google Chrome).
Press Ctrl + Shift + P (Firefox or Internet Explorer).
Press Control + Option + P (Safari).
If the Reports option is responsive, then let's go back to your regular browser and clear its cache. Browser cache can sometimes cause issues when trying to do certain tasks on QuickBooks.
Also, you can try using a different supported browser. This way, you can check whether this has something to do with your browser.