Getting info about flight at the site, but at the api not

FlightAware AeroAPI
1

all work fine, as you can see here for example: https://flight-xml.herokuapp.com/api/load/LY313
this one not work: https://flight-xml.herokuapp.com/api/load/AIZ51
the same with WIZZ7900 and more…

at the site flight number:AIZ51 received data.

please help its important for me.

2

help plzz its important

3

It’s hard to tell from those links what might be the issue. Can you post the request that is being made to FlightXML by your app or sample code for us to examine?