VK IOS SDK audio.get returns not all data, why?

Question

In contact with

I use the VK IOS SDK and when calling the audio.get method, I get not all audio recordings as a result,
some are not loaded, and the same ones.
What is it connected with?

Answer 1

Guys there is an official answer from the support service:

Some entries, at the request of the copyright holders, are available only in the web version and official applications.
Best regards,
Agent