With the entire computing industry moving away from Flash, Fedex is jonesin' to get users to continue to use it. The problem is, Apple, Chrome, Firefox and Microsoft Edge don't support it anymore. You can still install and activate it, but by default, it either doesn't come with the browser or it's turned off.
Fedex's problem is that their website really doesn't work without it. So Fedex is offering to pay you $5 to turn it on. Leo says that Flash is a huge source of security issues, malware, and phishing scams. So he advises not to take the bait and leave it off.