The plugin gives you a chance to change all default texts that are in English to your language. For the most popular and used features, you will see the fields directly when you configure. Example: network names (texts of buttons) you can change directly in the network picker, share counter texts you can change in the share counter setup screen.
But there are still texts that do not have a separate field for that. Instead of using a translation plugin (like Loco Translate) or Poedit tool you can do this directly from settings.
You can find fields in Advanced -> Translation Settings.