$url = 'modules.php?module=index';
// Check for determined referral id
-if ((isExtensionActive('user')) && (isReferralIdValid()) && (isValidId(determineReferralId()))) {
+if ((isExtensionActive('user')) && (isValidReferralId()) && (isValidId(determineReferralId()))) {
// Run filter chain for updating referral data
runFilterChain('update_referral_data');