You are downloading the WP for Windows AppX file v126.96.36.199 for Windows Phone. WP for Windows is a free and useful Social app: FREE Trial! Studio for WP (formerly WP for Windows) is a fully featured native client for your WordPress user on all devices. Get all of WordPress ... You can now download the offline AppX file to install & try it.
Download Locations for WP for Windows 188.8.131.52 AppX file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline WP for Windows AppX file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.