If you are having issues with the tutorial at the point of using the infrared please follow these instructions below.
When you are prompted to click X to activate infrared, please use your cursor/mouse to click on the infrared (You can do this on the word "infrared"). You'll be able to progress from there.
We will have an update coming soon so the "x" key will function as intended.
Please let us know in this thread if that worked for you. Thanks!