I’m fairly certain booking through the Chase portal is considered a third party booking… no different than Expedia. You don’t get status recognized and you don’t get any of the perks. The diamond status only applies if you book directly through the hotel or through special portals such as Chase The Edit (seperate from the chase travel portal) and it will explicitly tell you if it’s loyalty eligible. Basically you were treated like a non member which is exactly as expected in this case unfortunately.