You are downloading the ScreenConnect AppX file v5.5.9700.0 for Windows Phone. ScreenConnect is a free and useful Business app: WORKS WITH SCREENCONNECT 5.5 OR HIGHER.Use this ScreenConnect Client to join sessions in an existing instance of ScreenConnect. If you don't ... You can now download the offline AppX file to install & try it.
Download Locations for ScreenConnect 5.5.9700.0 AppX file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline ScreenConnect AppX file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.