Complex sentence: In February 2015, the Windows client was discontinued and ceased to work, with Google recommending users to use Google Hangouts instead, by migrating to the Google Hangouts app on the Chrome browser platform.
Split into simpler sentences: In February 2015, the Windows client was discontinued and ceased to work, with Google recommending users to use Google Hangouts instead. Users of Windows client were instructed to migrate to the Google Hangouts app on the Chrome browser platform.