If the potential new renter messages multiple residents, the reward amount may be split among the residents who respond. If you are not one of the first two residents to answer the prospective renter's question, or if you are not helpful in your response, you may not be eligible for the reward.
TIP: Add your phone number to your Rentgrata profile so that you can receive message notifications via SMS text message. The quicker and more thoughtful the reply, the more likely it is that you'll earn a reward!