Device Wide VPN

I have activated the device-wide VPN, so it should apply across all apps. However, it seems that when I connect to a Malaysia server, the TikTok app does not recognize the VPN connection.

Since TikTok Shop is not available in my current country but is available in Malaysia, the app should detect the Malaysian location when the VPN is enabled. Unfortunately, this does not appear to be working as expected.

Could you please assist in checking this issue?