Η application Meta's WhatsApp chats do not work worldwide. Many users on Twitter have complained that they can't have it access in the service. The app shows an error message saying “Connecting to WhatsApp”.
The official accountof WhatsApp on Twitter doesn't report anything at the moment.
However, it may not be just WhatsApp that is facing it problems. According to Downdetector, Twitter, Instagram, Facebook and Telegram they face problems in some countries.
Other major apps and websites like YouTube, Snapchat, and Gmail seem to be working fine at the time of writing.