Gosh - you'd almost think that airports are meant to provide a service to its customers, most of which won't be familiar with FR24 (which also frequently shows 'planned' flights as well as those that actualy operate).
Having tried to sell Carlisle and divested its 'investment' in Teesside so they could concentrate on fortress "build it and they will come" Southend, expecting them to provide such basics doesn't seem too excessive - how much can it cost?