Having the AOD issue here, in the settings it's all on as it should be but still not working. Hoping it starts working as I don't want to resort to a factory reset then have to f$#k around getting everything back to how to want it again.
I just got my S8 figured out, You dont do factory reset of the phone but of the app it self.
Settings>Lock Screen>Always on Display>About Always On Display>i ( In the top right corner)> click on version on the bottom. then theres > reset to factory
Just tried that. Nothing happens when I press on version. Tried the factory reset the other day, still nothing.
On a side note though, AOD does work for me, just not with the clear view cover.