I should have the 10 mil and 25 mil achievements by now, but I don't. I've checked a few different pages, but I can't find the right one.

Go to the shop you've made that much in go to edit shop and it should come up.

That's one of the pages I never thought to check lol. I got them, thanks (:

It took me a while to figure that out too. Congrats on getting there.