Adobe Flash Player Not Enabled But Unable To Enable

Hello,

I am trying to use sapling ( a website for school) and it requires the newest version of adobe flash to be enabled. I recently purchased my computer and the adobe website says that it is up to date and has it installed. I have tried to enable it but it won't work. In my settings it shows the flash player as on but the website continues to show it as needed to be enabled or downloaded. The other two options of clicking on the icons at the top to "enable always" or "once" is not present so I am unsure as to how to enable it for that website. Thank you for the help!