You are downloading the PDiX Attach AppXBundle file v2016.129.1735.0 for Windows Phone. PDiX Attach is a free and useful Productivity app: PDiX Attach is compatible with Windows Phone 8.1 and higher. The app allows images directly into the PaperDynamix server as attachments to invite you ... You can now download the offline AppXBundle file to install & try it.
Download Locations for PDiX Attach 2016.129.1735.0 AppXBundle file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline PDiX Attach AppXBundle file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.