The boosters are horrendous. Purchasing the duo boost, the boosters seriously suck like 90% of the time.
I've purchased multiple duo boosts here, and was getting semi-mixed results at first. Decent luck with some decently skilled boosters at first, and now I am getting nothing but trash.
Today, one "booster" dove at level 2, pinging me incessantly to join him. He was WAY upside down that game, but our team pulled out a win. We carried him. His end score was 4/9.
Another entirely neglected my lane, despite my getting first blood on my lane opponent, while their jungler babysat up top. Despite that, I still went 4/2 during the lane phase. Not terrible. However, the "booster" jungler fed and literally never ganked top, resulting in a brutal loss. His end score was 7/9.
Upon bringing this up with "support", they ridiculed me and told me no one else had ever complained. Not being sucked into some random back-and-forth, I pointed to their ending KDA/income/vision/etc., and also pointed out the level 2 turret dive. They stopped responding entirely.
Lesson learned. This service is trash and will never be anything worth purchasing. The "boosters" are garbage, the "support" is worse. Just spend your money elsewhere.