"Speech support" refers to the ability to speak a phrase and have it translated offline. Without speech support for a specific pack, you can only type text.
While Microsoft Translator is a popular translation tool, there are alternative options available: microsoft translator offline language pack download
Google Play Services might be conflicting. Force close the Translator app, clear the cache (Settings > Apps > Translator > Storage > Clear Cache), and restart the download. "Speech support" refers to the ability to speak
The process varies slightly depending on your device, but always requires an initial internet connection. On Android clear the cache (Settings >