Hi Anatoliy, 

Welcome to Box Community and glad to help!

Kindly follow these troubleshooting steps to fix your issue. 

• 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 different browsers and network connection. 


• You may also try to restart your machine. 

Hope it helps! 

Thanks, Rona!