Is FoE - Helper safe?

FoE - Helper uploads in-game profile and building data to api.foe-rechner.de when GlobalSend is enabled (on by default).

When the GlobalSend setting is active, the extension reads the player's in-game profile (player ID, username, portrait, guild ID, world) and Great Building data from the game page and posts it to api.foe-rechner.de on game startup. Game world list data is also transmitted unconditionally, regardless of the GlobalSend setting. The feature is marketed as guild coordination and can be disabled via the extension's settings.