Below are the websites I may use in the Escape Rooms I create. I most often use YouTube, Jigsaw Planet, and ProProfs.
Test these two sites below in your classroom. One easy way to do this is by scrolling through this webpage to make sure the activities are showing correctly.
If you are getting error messages from your school computers, you school may have a firewall up and is blocking these sites. If this is the case, you can reach out to your IT department, and see if they will lift the block for your classroom activity.