Box screen is Blank

Hi Elena, 

Welcome to Box Community and glad to help! 

Are you logging in through the Box website when you encountered the issue? As for your blank screen issue, can you try these for the resolution? 

• Please ensure your web browser is the latest version of Chrome, Firefox, Safari, or Edge
• Try clearing your browser's cache. If this does not resolve your issue, please proceed to the next step.
• Verify that you are using one of our recommended operating systems.
• Try temporarily disabling or configuring your firewall to allow Box as a trusted site. You may find that your anti-virus software includes a built-in firewall. If you are attempting to access Box from an office setting and experience upload issues, then please contact your IT administrator or internal Help Desk.
• Restart your machine. 

Hope it helps!