With YTmonster YES the ALWAYS drop. I wrote a support ticket, and was told that "the subscriber function is in BETA", this was last week (January 2018).
I have had nothing but problems with YTMonster. Most recently they were throwing SQL errors, and I lost 30,000 points. When I complained, and warned that if they don't make it right, that I would not be subscribing again as a premium member. They deleted my account. Even though I had 10s of thousands of points remaining, and despite that I was paying $14.99 to be a premium subscriber.