On Android I see something different:

1 hr bottom left, but 3 hours in the table

I've just purchased Premium for the 1hr forecast, however, is it me or does the red bar at the bottom show 1hr for 3hr forecasting, and vice-versa?

The "display as" and "model" show the current settings, but the "1hr"/"3hr" seem to show what you're switching to.