OptiMonk: AI Popup Builder

I installed this ap and the pop up that gave the customer a discount appeared on my page by the time customers were on it for a couple of seconds. Why give a discount to someone who just got on the page? I set it up to appear later. I wrote for help and they didn't respond. I uninstalled and 2 days later got an email saying that by August 2nd I used almost all of my ap up for the month and wouldn't see it work till next month. If I wanted it to work I had to upgrade. Then a day later I got an email saying I had used all of the ap. How did I use all of it up, when a day earlier it said I had some left? I wasn't even using the ap anymore..... Didn't make sense to me. So the free ap work for 2 days out of the month? The rest I have to pay? And it doesn't even make the pop up with the discount come up when I want it to and customer service won't answer?
UPDATE; Optimunk scheduled a call and online screen session and showed me how some things worked. They set it in motion and designed a nice pop up that included pictures of some of my inventory. They set it to only pop up upon exit intent. I appreciated the help. I am raising it from 1 star to 3 stars because of the help. I will update this review when I see if the ap actually helps my conversion rate.