"Are you sure you want to do this?"

If you got this message while installing your theme from the WordPress panel, it usually means that you have a too low upload limit size on your server.

In order to bypass this issue, the quickest hack is too upload your theme manually.

Please follow along those steps:

• Extract (unzip) the Woffice theme folder downloaded from ThemeForest Connect to your web server using any FTP client (eg: FileZilla, CyberDuck),
• Upload the extracted folder within the wp-content > themes folder on your server.
• Head over to your WordPress admin panel > Appearance > Theme section, and activate Woffice.