Despite constantly making in-game purchases and being an active player, I never get high-rated players from the packs, and even when I try to upgrade, even a 90% success chance fails. This situation is really frustrating. If no fix is made, I’m sorry but I will delete the game.”
pack weight is the same whether you spend a little or a lot, and ranking works 100 percent of the time when you have enough cards to have 100 per cent certainty ... if you are attempting to rank up with 90% then there is a 10% chance every time that it will fail.
It's always better to spend that one extra card than to lose nine
