I'm trying this....
How to Enable Flash
It's a little out of date, but the new updates took out all of my "allowed" sites, and didn't give me the option to add them back. THIS added to the "allowed" list.
The easier way to allow a site to run Flash is to go to the site and then click on the little icon to the left of the URL in the address bar.
The icon will either be a lock icon if the connection is using HTTPS or it’ll be an information icon if the connection is non-secure. When you click on this icon, you’ll see a bunch of settings you can configure for that particular site. Towards the bottom will be Flash. By default, it should be set to Use global default (Ask), which means the browser should ask you if you want to enable Flash for a site that has Flash content.