Pretty cut and dry according to the terms and conditions:
Members will not earn points or miles for Reward Stays. But members may earn points (not miles) for incidental charges at a Hilton Family hotel during a Reward Stay, provided such charges are deemed eligible folio charges at Hilton®, Conrad® Hotels and Resorts, Doubletree®, Embassy Suites®, Hilton Garden Inn®, Hilton Grand Vacations®, and the Waldorf Astoria hotels. Members will not earn points for incidental charges during a Reward Stay at a Hampton Inn®, Hampton Inn & Suites® or Homewood Suites by Hilton® hotel.
So at the Conrad you should have gotten them.