First of all, make sure you're looking at the story in your target language. (We also have all-English versions, so don't get confused!)
If you're seeing "translate" buttons, but everything on the page seems to be in English, then you probably have some automatic translation app or plugin running on your device.
Here's the way to test: Compare the "translated" text with the original text. You may need to compare a few paragraphs. If the two paragraphs are similar... but not exactly the same... then you definitely have a sneaky translator hiding in the background there.
Try checking your web browser settings, and check that you don't have a plugin like Google Translate mucking things up for you.