We haven't received similar issues reported. For now, let's open your account in a Private mode and see if it works for you. This method prevents cookies from being stored on your computer, making it a great place to identify browser problems.
Use these keyboard shortcuts depending on the browser you're using:
Google Chrome: press Ctrl + Shift + N.
Mozilla Firefox: press Ctrl + Shift + P.
Internet Explorer: press Ctrl + Shift + P.
Safari: press Command + Shift + N.
If you're able to see the details on your invoice, clear the browser's cache. This removes the history or log of sites so you can start with a clean slate.
The following resources are good references for creating an invoice: