You are downloading the Chatogram Preview AppXBundle file v2016.1111.845.0 for Windows Phone. Chatogram Preview is a free and useful Social app: Unofficial Telegram messenger client!Preview ... You can now download the offline AppXBundle file to install & try it.
Download Locations for Chatogram Preview 2016.1111.845.0 AppXBundle file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline AppXBundle File To Install It Any More.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Chatogram Preview AppXBundle file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.