diff --git a/application/src/main/java/org/thingsboard/server/service/component/AnnotationComponentDiscoveryService.java b/application/src/main/java/org/thingsboard/server/service/component/AnnotationComponentDiscoveryService.java
index 77e2afcd88..49249b17f5 100644
--- a/application/src/main/java/org/thingsboard/server/service/component/AnnotationComponentDiscoveryService.java
+++ b/application/src/main/java/org/thingsboard/server/service/component/AnnotationComponentDiscoveryService.java
@@ -115,11 +115,24 @@ public class AnnotationComponentDiscoveryService implements ComponentDiscoverySe
     }
 
     private void putComponentIntoMaps(ComponentType type, RuleNode ruleNodeAnnotation, ComponentDescriptor component) {
-        if (ruleChainTypeContainsArray(RuleChainType.CORE, ruleNodeAnnotation.ruleChainTypes())) {
-            coreComponentsMap.computeIfAbsent(type, k -> new ArrayList<>()).add(component);
+        boolean ruleChainTypesMethodAvailable;
+        try {
+            ruleNodeAnnotation.getClass().getMethod("ruleChainTypes");
+            ruleChainTypesMethodAvailable = true;
+        } catch (NoSuchMethodException exception) {
+            log.warn("[{}] does not have ruleChainTypes. Probably extension class compiled before 3.3 release. " +
+                    "Please update your extensions and compile using latest 3.3 release dependency", ruleNodeAnnotation.name());
+            ruleChainTypesMethodAvailable = false;
         }
-        if (ruleChainTypeContainsArray(RuleChainType.EDGE, ruleNodeAnnotation.ruleChainTypes())) {
-            edgeComponentsMap.computeIfAbsent(type, k -> new ArrayList<>()).add(component);
+        if (ruleChainTypesMethodAvailable) {
+            if (ruleChainTypeContainsArray(RuleChainType.CORE, ruleNodeAnnotation.ruleChainTypes())) {
+                coreComponentsMap.computeIfAbsent(type, k -> new ArrayList<>()).add(component);
+            }
+            if (ruleChainTypeContainsArray(RuleChainType.EDGE, ruleNodeAnnotation.ruleChainTypes())) {
+                edgeComponentsMap.computeIfAbsent(type, k -> new ArrayList<>()).add(component);
+            }
+        } else {
+            coreComponentsMap.computeIfAbsent(type, k -> new ArrayList<>()).add(component);
         }
     }
 
diff --git a/application/src/main/java/org/thingsboard/server/service/edge/rpc/EdgeGrpcService.java b/application/src/main/java/org/thingsboard/server/service/edge/rpc/EdgeGrpcService.java
index 3ccdd40a17..131679ebd6 100644
--- a/application/src/main/java/org/thingsboard/server/service/edge/rpc/EdgeGrpcService.java
+++ b/application/src/main/java/org/thingsboard/server/service/edge/rpc/EdgeGrpcService.java
@@ -161,7 +161,7 @@ public class EdgeGrpcService extends EdgeRpcServiceGrpc.EdgeRpcServiceImplBase i
     public void deleteEdge(EdgeId edgeId) {
         EdgeGrpcSession session = sessions.get(edgeId);
         if (session != null && session.isConnected()) {
-            log.debug("Closing and removing session for edge [{}]", edgeId);
+            log.info("Closing and removing session for edge [{}]", edgeId);
             session.close();
             sessions.remove(edgeId);
             sessionNewEvents.remove(edgeId);
@@ -179,11 +179,12 @@ public class EdgeGrpcService extends EdgeRpcServiceGrpc.EdgeRpcServiceImplBase i
     }
 
     private void onEdgeConnect(EdgeId edgeId, EdgeGrpcSession edgeGrpcSession) {
-        log.debug("[{}] onEdgeConnect [{}]", edgeId, edgeGrpcSession.getSessionId());
+        log.info("[{}] edge [{}] connected successfully.", edgeGrpcSession.getSessionId(), edgeId);
         sessions.put(edgeId, edgeGrpcSession);
         sessionNewEvents.put(edgeId, false);
         save(edgeId, DefaultDeviceStateService.ACTIVITY_STATE, true);
         save(edgeId, DefaultDeviceStateService.LAST_CONNECT_TIME, System.currentTimeMillis());
+        cancelScheduleEdgeEventsCheck(edgeId);
         scheduleEdgeEventsCheck(edgeGrpcSession);
     }
 
@@ -214,7 +215,7 @@ public class EdgeGrpcService extends EdgeRpcServiceGrpc.EdgeRpcServiceImplBase i
                 scheduleEdgeEventsCheck(session);
             }, ctx.getEdgeEventStorageSettings().getNoRecordsSleepInterval(), TimeUnit.MILLISECONDS);
             sessionEdgeEventChecks.put(edgeId, schedule);
-            log.trace("[{}] Check edge event was scheduler for edge [{}]", tenantId, edgeId.getId());
+            log.trace("[{}] Check edge event scheduled for edge [{}]", tenantId, edgeId.getId());
         } else {
             log.debug("[{}] Session was removed and edge event check schedule must not be started [{}]",
                     tenantId, edgeId.getId());
@@ -222,6 +223,7 @@ public class EdgeGrpcService extends EdgeRpcServiceGrpc.EdgeRpcServiceImplBase i
     }
 
     private void cancelScheduleEdgeEventsCheck(EdgeId edgeId) {
+        log.trace("[{}] cancelling edge event check for edge", edgeId);
         if (sessionEdgeEventChecks.containsKey(edgeId)) {
             ScheduledFuture<?> sessionEdgeEventCheck = sessionEdgeEventChecks.get(edgeId);
             if (sessionEdgeEventCheck != null && !sessionEdgeEventCheck.isCancelled() && !sessionEdgeEventCheck.isDone()) {
@@ -232,7 +234,7 @@ public class EdgeGrpcService extends EdgeRpcServiceGrpc.EdgeRpcServiceImplBase i
     }
 
     private void onEdgeDisconnect(EdgeId edgeId) {
-        log.debug("[{}] onEdgeDisconnect", edgeId);
+        log.info("[{}] edge disconnected!", edgeId);
         sessions.remove(edgeId);
         sessionNewEvents.remove(edgeId);
         save(edgeId, DefaultDeviceStateService.ACTIVITY_STATE, false);