'WolframAlpha API: invalid appid

I have signed up for the Wolfram Alpha Developer Platform and created an app. The appID that I received for this app works fine when querying the spoken results API but if I try to query the fast query recognizer API (providing that same appID to the API call) I receive { "error": 1, "msg": "Invalid appid" } I don't understand why my appID works with one API but not with another one! I have tried creating another app (which gave me a second appID) but that appID triggers the same error.

Any ideas what might be going on? Maybe the fast query recognizer API requires you to be a paying customer (which I am not at this point)?

Thanks for helping!



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