I am having problems due to this "flash not supported" business. My science teacher is planning to have a simulation from PhET, but it says this. It annoys me because my teacher will not know about this. When I click the "Get ADOBE® FLASH® PLAYER" button, it says this:
Please help me!
You don't mention the browser in use. See https://helpx.adobe.com/flash-player.html for links to enable/allow Flash in the various browsers.
Flash Player is being end-of-lifed at the end of 2020 - your instructor needs to migrate to resources that will continue to work post 2020.
Oh sorry, I use Chrome as my browser. So sorry about that.