I have a paid account and still Duo is getting more and more offensive with messages. Some "motivational" ones, some that offer to purchase (with the local currency - lingots) some perks. There is a line and for me it's getting annoying. And this while I have "motivational messages" deselected in options. There's literally nothing to switch off more, but I'm gonna leave if that continues. I'm not even mentioning the "friend updates" feature, which already was a controversial addition.