VK iOS SDK callback no response.

[Frozenfox47]

Hi. We're having some issues with using VK as a login portal for our game.

As shown in pic 2, please take a look at VK iOS SDK's PGUtilities.m file.

↑ this is pic 2
In line 22, a message to launch VK is sent, and the VK app is launched. The relevant parameters are normal. (Please see pic1 for launch parameters).
In line 30, VK is supposed to be sending data to our end, but we received nothing, there is no response.

we can go to the game app and jump to/launch the VK app from there, log in with VK successfully, and then automatically jump back to the game from the VK app. However, as you can see in pic2, the callback part was never received.

↑ this is pic 1