I just upgraded to Premium so that I can put my Trello stuff on the calendar.
Now I cannot tell from your website or the internet what buttons I am supposed to push (or whatever) in order to actually get into calendar view.
However, I see a lot of advertising about how convenient views are supposed to be.
If you want them to be convenient, how about making it convenient to figure out how to get into them? I need to put stuff on my calendar right now and it just shouldn't be hard.