You are downloading the Nkoli AppX file v18.104.22.168 for Windows Phone. Nkoli is a free and useful Social app: Nkoli is a unique social network that brings you a mix of trending issues (as per top hashtags) as well as the ability to meet new people and connect ... You can now download the offline AppX file to install & try it.
Download Locations for Nkoli 22.214.171.124 AppX file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline AppX 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 Nkoli AppX file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.