WhatsApp offers a set of privacy settings that allow users to control their personal information and maintain their privacy. However, there may be cases when you encounter problems with WhatsApp privacy settings, resulting in error codes like 66, 67, 68, 69, or 70.
These error codes indicate specific problems with configuring privacy or sync settings. If you are facing issues with your WhatsApp privacy settings, here are some troubleshooting steps to help you fix them.

Solving the problem of WhatsApp privacy settings
WhatsApp Update
Please ensure you are utilizing your device's most up-to-date version of WhatsApp. Developers frequently release updates with bug fixes and improvements, including improvements to privacy settings.
Check for any available updates for WhatsApp in your App Store (Google Play Store for Android or App Store for iOS) and install the latest version.
Check app permissions
Verify that WhatsApp has the necessary licenses to access your device's features and data.
Go to your device settings and find the app permissions section.
Make sure that WhatsApp has permission to access your contacts, camera, microphone, and storage.
Granting the required permissions ensures that the privacy settings are working correctly.
Reboot your device
A simple restart can sometimes resolve temporary glitches or conflicts affecting privacy settings. Restart your device and open WhatsApp again. This step can refresh system and network connections, which may resolve any issues hindering the privacy settings' functionality.
Reset privacy settings
If you are facing persistent issues with your WhatsApp privacy settings, you can reset them to their default values. Open WhatsApp, go to the settings menu, find privacy settings, and find the option to reset or restore default settings. Doing this lets you clear any custom settings or conflicts causing issues.
Clear app cache
Reset network settings
Connectivity problems can affect your privacy settings. Resetting your network settings can help. Go to your device's settings and look for the "Network & Internet" or "Connections" section.
Choose the option to reset network settings. Note that this will remove saved Wi-Fi networks and their passwords, so you must reconnect to Wi-Fi afterward.
Reinstall WhatsApp
You have another option if the previous steps do not resolve the issue. Attempt the following:
Reinstalling WhatsApp. Before proceeding, you must ensure that you have backed up your data. Next, Uninstall WhatsApp from your device, restart it and then reinstall WhatsApp from your app store. During the setup process, you'll have the option to restore your chat history.
Contact WhatsApp Support
If you are still experiencing difficulties with your issue, WhatsApp privacy settings, and experience error code 66, 67, 68, 69, or 70, then it is recommended to contact WhatsApp Support for further assistance.
Please provide the details about the error code and any specific error messages you receive. In addition, they can give you specific instructions based on your device and the error code you're experiencing.