Update the app to the latest version in the AppGallery.
Uninstall the app and reinstall it through the Vivo Store. This should resolve the issue.
The Google Play build will have the problem fixed in the coming updates.
1. Uninstall the app and reinstall it through Google Play. For this, open Google Play and enter “VK” in the search bar.
2. Open the OPPO App Market and press the profile icon at the bottom right.
3. Tap the cog icon at the top right corner and set the Auto-update over Wi-Fi slider to inactive. This should resolve the issue.