The best person to contact about your referral submissions and status is a member of your company's HR or recruiting team. Workable - which powers your referral portal - is able to assist with technical issues, but cannot comment on your organization's referral policies regarding things like duplicate candidate submission or rewards.
You can monitor its progress and your eligibility for rewards in the referral portal. After submitting a referral, click Referrals in the toolbar to get started.