diff --git a/waku/v2/protocol/relay/waku_relay.go b/waku/v2/protocol/relay/waku_relay.go
index 97f12234..b9e15238 100644
--- a/waku/v2/protocol/relay/waku_relay.go
+++ b/waku/v2/protocol/relay/waku_relay.go
@@ -173,16 +173,19 @@ func (w *WakuRelay) upsertTopic(topic string) (*pubsub.Topic, error) {
 	if !ok { // Joins topic if node hasn't joined yet
 		err := w.pubsub.RegisterTopicValidator(topic, w.topicValidator(topic))
 		if err != nil {
+			w.log.Error("failed to register topic validator", zap.String("pubsubTopic", topic), zap.Error(err))
 			return nil, err
 		}
 
 		newTopic, err := w.pubsub.Join(string(topic))
 		if err != nil {
+			w.log.Error("failed to join pubsubTopic", zap.String("pubsubTopic", topic), zap.Error(err))
 			return nil, err
 		}
 
 		err = newTopic.SetScoreParams(w.topicParams)
 		if err != nil {
+			w.log.Error("failed to set score params", zap.String("pubsubTopic", topic), zap.Error(err))
 			return nil, err
 		}
 
@@ -199,11 +202,13 @@ func (w *WakuRelay) upsertTopic(topic string) (*pubsub.Topic, error) {
 func (w *WakuRelay) subscribeToPubsubTopic(topic string) (*pubsubTopicSubscriptionDetails, error) {
 	w.topicsMutex.Lock()
 	defer w.topicsMutex.Unlock()
+	w.log.Info("subscribing to underlying pubsubTopic", zap.String("pubsubTopic", topic))
 
 	result, ok := w.topics[topic]
 	if !ok {
 		pubSubTopic, err := w.upsertTopic(topic)
 		if err != nil {
+			w.log.Error("failed to upsert topic", zap.String("pubsubTopic", topic), zap.Error(err))
 			return nil, err
 		}
 
@@ -330,6 +335,7 @@ func (w *WakuRelay) GetSubscriptionWithPubsubTopic(pubsubTopic string, contentTo
 func (w *WakuRelay) GetSubscription(contentTopic string) (*Subscription, error) {
 	pubsubTopic, err := waku_proto.GetPubSubTopicFromContentTopic(contentTopic)
 	if err != nil {
+		w.log.Error("failed to derive pubsubTopic", zap.Error(err), zap.String("contentTopic", contentTopic))
 		return nil, err
 	}
 	contentFilter := waku_proto.NewContentFilter(pubsubTopic, contentTopic)
@@ -371,6 +377,7 @@ func (w *WakuRelay) subscribe(ctx context.Context, contentFilter waku_proto.Cont
 	for _, opt := range optList {
 		err := opt(params)
 		if err != nil {
+			w.log.Error("failed to apply option", zap.Error(err))
 			return nil, err
 		}
 	}
@@ -389,6 +396,7 @@ func (w *WakuRelay) subscribe(ctx context.Context, contentFilter waku_proto.Cont
 			_, err := w.subscribeToPubsubTopic(cFilter.PubsubTopic)
 			if err != nil {
 				//TODO: Handle partial errors.
+				w.log.Error("failed to subscribe to pubsubTopic", zap.Error(err), zap.String("pubsubTopic", cFilter.PubsubTopic))
 				return nil, err
 			}
 		}
@@ -425,6 +433,8 @@ func (w *WakuRelay) Unsubscribe(ctx context.Context, contentFilter waku_proto.Co
 
 	pubSubTopicMap, err := waku_proto.ContentFilterToPubSubTopicMap(contentFilter)
 	if err != nil {
+		w.log.Error("failed to derive pubsubTopic from contentFilter", zap.String("pubsubTopic", contentFilter.PubsubTopic),
+			zap.Strings("contentTopics", contentFilter.ContentTopicsList()))
 		return err
 	}
 
@@ -436,6 +446,7 @@ func (w *WakuRelay) Unsubscribe(ctx context.Context, contentFilter waku_proto.Co
 		pubsubUnsubscribe := false
 		sub, ok := w.topics[pubSubTopic]
 		if !ok {
+			w.log.Error("not subscribed to topic", zap.String("topic", pubSubTopic))
 			return errors.New("not subscribed to topic")
 		}
 
@@ -475,7 +486,7 @@ func (w *WakuRelay) Unsubscribe(ctx context.Context, contentFilter waku_proto.Co
 func (w *WakuRelay) unsubscribeFromPubsubTopic(topicData *pubsubTopicSubscriptionDetails) error {
 
 	pubSubTopic := topicData.subscription.Topic()
-	w.log.Info("unsubscribing from topic", zap.String("topic", pubSubTopic))
+	w.log.Info("unsubscribing from pubsubTopic", zap.String("topic", pubSubTopic))
 
 	topicData.subscription.Cancel()
 	topicData.topicEventHandler.Cancel()
@@ -484,11 +495,18 @@ func (w *WakuRelay) unsubscribeFromPubsubTopic(topicData *pubsubTopicSubscriptio
 
 	err := topicData.topic.Close()
 	if err != nil {
+		w.log.Error("failed to close the pubsubTopic", zap.String("topic", pubSubTopic))
 		return err
 	}
 
 	w.RemoveTopicValidator(pubSubTopic)
 
+	err = w.pubsub.UnregisterTopicValidator(pubSubTopic)
+	if err != nil {
+		w.log.Error("failed to unregister topic validator", zap.String("topic", pubSubTopic))
+		return err
+	}
+
 	delete(w.topics, pubSubTopic)
 
 	return w.emitters.EvtRelayUnsubscribed.Emit(EvtRelayUnsubscribed{pubSubTopic})