How can you tell if a bonus code has been successfully activated? ?

The easiest sign that a bonus code worked is seeing the reward appear in your account balance or receiving confirmation after activation. I usually check the csgo net promo code details before depositing, because the activation rules, Steam requirements, and eligibility conditions can affect whether the bonus is credited correctly. I also compare the balance before and after the first qualifying deposit and review any account notifications. If nothing changes, I recheck the code spelling and timing before contacting support, since entering it too late is one of the most common reasons a reward does not appear.