Not receiving DayZ data

[Internal-Exception]

Hi, aXen!
The app is unable to get data about DayZ servers. I checked, for example, the Counter-Strike: Global Offensive server - it receives data and everything works as it should.
All ports on my server are unlocked and there are no restrictions.

Any combination of (DayZ) ip:port and queryPort - the application does not receive any data.

Or perhaps I'm doing something wrong?

[Internal-Exception]

Perhaps I understood what the problem is, this is query_port. I added other people's DayZ servers and apparently the application could not mathematically calculate the query_port for them, and for some the calculation came up and received the data, apparently for some servers they are specially set by administrators.