The developers broke the game. The evil side is always massively outnumbered. How do they respond? By introducing new factions to further dilute the population, boosting the already overpowered good troops to nerf an entire mechanic the evil side relied on, and trebling the cost of the only premium troops that helped the evil side. Entire factions have simply quit. And as they make it impossible to transfer xp between sides, they quit the game completely and demand refunds.