now i have reach the second challenge the "Spring" girl. after I win it i got another challenge. at automatically i do it and get the 4th girl attraction
so, may be it bug? - today, when i got & activated bonus "20 clicks at second for 20 seconds" (mean- periodically bonuses which gave ymens\hearts\kobans\skills) the browser page are crush & refresh and this bonus changed to bonus "increase the ymens gained multiplier 5"