There is purchase confirmation as you have to click two times to buy stand, and next to it there is wrote PAX/CARGO what is hard to miss in my opinion.
Everyone learned on their mistake, and now their careful with starting new airports - and this is the same thing what you should do, stop just typing about requests that’s not understandable what your buying and get one or two M cargo contracts what are not hard to get if you can handle decent amounts of even S planes at the same time and save now for pax one.
Also if you want to write suggestion about more clear stand informations it will count as game ui new features/updates Game UI - Possible features/updates - #351 by DHC8 what got back to life today