Just upload an empty file to overwrite the existing file....or send an email to support

Thanks for the quick replies

Also can you password protect the file so that not everyone can access the file even if they have the link

I have deleted your file. There are a wide range of security options you can add to a file, either using File > File Security ( or by choosing 'Change' on the Save as dialogue right-side heading 'Security'. In the case of exporting files to our server, you can also add a password to the file before publishing on "my.visokio.com". You can access this option in the File > Export > Publish... dialog by going in the "File options" tab dialog and adding the file password.