Once, a learner named Alex became obsessed with the leaderboard. Alex found a site promising a "Game Hub" with infinite coins, thinking it would make learning effortless.
: Accessible via the dumbbell icon, this is the official area for personalized review. Duoling Game Hub | Infinite coins
: Soon after, Alex’s account was flagged for unusual activity, and the device began showing suspicious pop-up ads—a common risk when using third-party "hubs" or unverified software . Once, a learner named Alex became obsessed with