I unintentionally sent a Thumbs-Up. Can I undo it? No. It is not possible to undo a Thumbs-Up. Related articles I am matched up with users who I have previously blocked My team lost even though we scored more points than the opposing team. What happens when I receive a penalty? I just turned 16, but I still can't use all the chat features. Can I change my set language again once I've selected it?