Youtube videos not playing on Mac
I'm running Mac OS High Sierra v10.13.6 and Safari v12.0.3 and Chrome on a mid-2012 iMac
Can't play any youtube videos using safari or chrome. I get a white framed window where the video should be. Click on it and nothing (of course) happens. I've Googled this one & tried all the obvious fixes (uninstalled flash player, reinstalled the latest version downloaded from Adobe, flushed the safari cache, cleared flash player history), but nothing has worked. I haven't upgraded to Mojave, concerned the age of the iMac (2012) won't handle it. (Googling it has failed me, this really is a first and could be the end of existence if we can't fix things by Googling them!!!).
Anyone got anything new I can try to fix this issue?
Thanks in advance.