Message background has turned black when I reply to an email.
When I Reply to an email as soon as I send it, the background turns black. This happens on both my iPad Air 12.5.6 (older so it won't upgrade), and on my Mac Mini OS 10.13.6 (also older and can't upgrade.
I've read several fixes for this, but I can't find any method of getting out of Dark Mode;
iPad Pro, 11-inch, 4th Gen, Cell mmW