You are downloading the Birthday Icons XAP file v1.0.0.0 for Windows Phone. Birthday Icons is a free Social App: If you notice that the various applications such as Whatsapp does not have all options you would like, with this application you can add additional features. You can now download the offline XAP package file to install & try it.
Download Locations for Birthday Icons 1.0.0.0 XAP file
Package File
Please Click Here > to retrieve available package files for Birthday Icons.
Please be aware that the Birthday Icons XAP file you are to download is hosted on the Microsoft Store CDN server. You can read more about Birthday Icons or get it on Microsoft Store.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Birthday Icons XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.