diff --git a/iot_config/src/lib.rs b/iot_config/src/lib.rs
index 83cbc4b83..dadc4531d 100644
--- a/iot_config/src/lib.rs
+++ b/iot_config/src/lib.rs
@@ -72,7 +72,9 @@ pub struct EpochInfo {
 
 impl From<u64> for EpochInfo {
     fn from(next_reward_epoch: u64) -> Self {
-        let start_time = DateTime::<Utc>::UNIX_EPOCH + Duration::days(next_reward_epoch as i64);
+        let start_time = DateTime::<Utc>::UNIX_EPOCH
+            + Duration::days(next_reward_epoch as i64)
+            + Duration::hours(1);
         let end_time = start_time + Duration::days(1);
         EpochInfo {
             period: start_time..end_time,
diff --git a/iot_config/src/sub_dao_epoch_reward_info.rs b/iot_config/src/sub_dao_epoch_reward_info.rs
index 63be49168..7c9c9e612 100644
--- a/iot_config/src/sub_dao_epoch_reward_info.rs
+++ b/iot_config/src/sub_dao_epoch_reward_info.rs
@@ -74,7 +74,7 @@ pub(crate) mod db {
                 address AS epoch_address,
                 sub_dao AS sub_dao_address,
                 epoch::BIGINT,
-                hnt_rewards_issued::BIGINT,
+                delegation_rewards_issued::BIGINT as hnt_rewards_issued,
                 delegation_rewards_issued::BIGINT,
                 rewards_issued_at::BIGINT
             FROM sub_dao_epoch_infos
@@ -105,11 +105,18 @@ pub(crate) mod db {
                 .to_timestamp()
                 .map_err(|err| sqlx::Error::Decode(Box::new(err)))?;
 
+            let hnt_rewards_issued = row.get::<i64, &str>("hnt_rewards_issued") as u64;
+            if hnt_rewards_issued == 0 {
+                return Err(sqlx::Error::Decode(Box::new(sqlx::Error::Decode(
+                    Box::from("hnt_rewards_issued is 0"),
+                ))));
+            };
+
             Ok(Self {
                 epoch: row.try_get::<i64, &str>("epoch")? as u64,
                 epoch_address: row.try_get::<String, &str>("epoch_address")?,
                 sub_dao_address: row.try_get::<String, &str>("sub_dao_address")?,
-                hnt_rewards_issued: row.try_get::<i64, &str>("hnt_rewards_issued")? as u64,
+                hnt_rewards_issued,
                 delegation_rewards_issued: row.try_get::<i64, &str>("delegation_rewards_issued")?
                     as u64,
                 rewards_issued_at,
diff --git a/iot_verifier/src/rewarder.rs b/iot_verifier/src/rewarder.rs
index dee51431e..d991a83a4 100644
--- a/iot_verifier/src/rewarder.rs
+++ b/iot_verifier/src/rewarder.rs
@@ -107,8 +107,16 @@ where
             let now = Utc::now();
             let sleep_duration = if scheduler.should_trigger(now) {
                 if self.data_current_check(&scheduler.schedule_period).await? {
-                    self.reward(next_reward_epoch).await?;
-                    scheduler.sleep_duration(Utc::now())?
+                    match self.reward(next_reward_epoch).await {
+                        Ok(()) => {
+                            tracing::info!("Successfully rewarded for epoch {}", next_reward_epoch);
+                            scheduler.sleep_duration(Utc::now())?
+                        }
+                        Err(e) => {
+                            tracing::error!("Failed to reward: {}", e);
+                            REWARDS_NOT_CURRENT_DELAY_PERIOD
+                        }
+                    }
                 } else {
                     REWARDS_NOT_CURRENT_DELAY_PERIOD
                 }