Facebook is a social media platform, where you connect with people easily. It has millions of users over the world. It keeps updated from time to time to add more features. You can upload any post like, image, video, docs, etc. There is a feature which is called Tag and used to tag your friend on any post. If you can’t tag your friends, then you should reload the current page, check the internet connection and also confirm the entered name is correct as well as they are on your friend list. If you still face the same, then contact Facebook customer service to fix it quickly. https://www.mailsupportnumber.com/fa...