There could be several reasons why you're unable to make or receive calls on וואצאפ. Here's how you can troubleshoot this issue:
1. Check your internet connection: וואצאפ calls require a strong and stable internet connection. If you're on a 4G or Wi-Fi network and still encountering problems, try to restart your router or switch to a different network.
2. Update וואצאפ: Ensure you're using the latest version of וואצאפ. Visit your device's app store, search for וואצאפ, and update if necessary.
3. Check וואצאפ permissions: Your device must allow וואצאפ to access your microphone and speakers. Check your device's settings to make sure these permissions are granted.
4. Restart your device: Sometimes, simple issues can be resolved by restarting your device.
5. Reinstall וואצאפ: If the problem persists, consider uninstalling and reinstalling וואצאפ. Please note that this should be a last resort, as it could result in the loss of data if your chats are not backed up.
If after all these steps you're still experiencing issues, it may be a problem with וואצאפ's servers. In this case, wait for a while and try again later.