I can not upload documents

Same here. I think there is some kind of upgrade in Box backend, things stop working since yesterday for me. Not able upload any type of file, always error: "Something went wrong with the upload. Please try again." Support team will just let you keep following the troubleshoot link. I tried different brower, different PC, with or without VPN. I saw another post saying mobile version not working. Hopefully it got fixed soon.

Hi there, 

Welcome to Box Community and glad to assist! 

Sorry to hear about your upload error(s), and you may follow the suggested troubleshooting steps in this article to address your upload error(s). 

Hope it works!