In my computer with internet, I just clicked on Internet Explorer that I still have on computer, then the message told me from before that the Internet Explorer is no longer be active or good to use, then I just clicked on the Internet Explorer-which is the only icon that the game site uses-in order for me to play the video games on that site with, then it still closed-out that site & opened-up the Microsoft Edge instead, but the game site won't work with that internet browser for me to play the games on that site with.
See if you might find that there is a way to open the Internet Explorer & to keep the Internet Explorer open as I be searching other sites from just the Internet Explorer(?)