If there is an anode in the hot-water outlet, you can find it by disconnecting the plumbing and running a long screwdriver down the nipple. If it stops after a couple of inches, there’s an anode there.
As to the hex anode, if there is one, it might either be under a plastic plug on the top of the tank or under sheetmetal. I’ve seen a lot of American-brand tanks — and they also market under the Whirlpool brand — that do that. In many cases, if you use the right rear hole for the legs on the draft diverter as a starting point and cut in a circle backward from the hole, you’ll find the anode. For others, you might have to drill an access hole (not too deep!) and slide a long screwdriver in and feel around for the anode.