Flash Player 24.0.0.189 settings don't stay set on Mac

Ever since I installed the beta version of Flash Player - v. 24.0.0.189 - on both my Mac computers, I've found the Flash Player settings I put in are not being saved. They change back to the defaults in an hour or so (haven't actually timed it, but I check several times a day and usually find them changed). No one else has access to my computers, and even if they did, they'd have to know my password to log on first too, before they could revert my choices. Why anyone would want to change them is beyond me. I don't know how this is happening, but because it's is on both my 2011 MacBook Air laptop and my 2016 Mac Mini, I'm concerned. Is it something in the beta version's code that makes it do this?

I don't want them at the default settings for security reasons. This issue has come up before and was fixed, but now it's back again. Why is this happening and is there a way to contact Adobe to fix this?