diff --git a/waku/waku_rln_relay/group_manager/on_chain/group_manager.nim b/waku/waku_rln_relay/group_manager/on_chain/group_manager.nim
index e61ffb956..2c062a873 100644
--- a/waku/waku_rln_relay/group_manager/on_chain/group_manager.nim
+++ b/waku/waku_rln_relay/group_manager/on_chain/group_manager.nim
@@ -118,27 +118,37 @@ method atomicBatch*(
     rateCommitments = newSeq[RawRateCommitment](),
     toRemoveIndices = newSeq[MembershipIndex](),
 ): Future[void] {.async: (raises: [Exception]), base.} =
+  echo "-------------- atomicBatch 1"
   initializedGuard(g)
+  echo "-------------- atomicBatch 2"
 
   waku_rln_membership_insertion_duration_seconds.nanosecondTime:
     let operationSuccess =
       g.rlnInstance.atomicWrite(some(start), rateCommitments, toRemoveIndices)
+  echo "-------------- atomicBatch 3"
   if not operationSuccess:
+    echo "-------------- atomicBatch "
     raise newException(CatchableError, "atomic batch operation failed")
   # TODO: when slashing is enabled, we need to track slashed members
   waku_rln_number_registered_memberships.set(int64(g.rlnInstance.leavesSet()))
+  echo "-------------- atomicBatch 5"
 
   if g.registerCb.isSome():
+    echo "-------------- atomicBatch 6"
     var membersSeq = newSeq[Membership]()
+    echo "-------------- atomicBatch rateCommitments.len: ", rateCommitments.len
     for i in 0 ..< rateCommitments.len:
       var index = start + MembershipIndex(i)
       debug "registering member to callback",
         rateCommitment = rateCommitments[i], index = index
       let member = Membership(rateCommitment: rateCommitments[i], index: index)
       membersSeq.add(member)
+    echo "-------------- atomicBatch 7"
     await g.registerCb.get()(membersSeq)
+    echo "-------------- atomicBatch 8"
 
   g.validRootBuffer = g.slideRootQueue()
+  echo "-------------- atomicBatch 9"
 
 method register*(
     g: OnchainGroupManager, rateCommitment: RateCommitment
@@ -404,6 +414,7 @@ proc runInInterval(g: OnchainGroupManager, cb: proc, interval: Duration) =
 proc getNewBlockCallback(g: OnchainGroupManager): proc =
   let ethRpc = g.ethRpc.get()
   proc wrappedCb(): Future[bool] {.async, gcsafe.} =
+    echo "------------ calling wrappedCb"
     var latestBlock: BlockNumber
     g.retryWrapper(latestBlock, "Failed to get the latest block number"):
       cast[BlockNumber](await ethRpc.provider.eth_blockNumber())
@@ -430,10 +441,14 @@ proc getNewBlockCallback(g: OnchainGroupManager): proc =
 proc startListeningToEvents(
     g: OnchainGroupManager
 ): Future[void] {.async: (raises: [Exception]).} =
+  echo "---------- startListeningToEvents 1"
   initializedGuard(g)
+  echo "---------- startListeningToEvents 2"
 
   let ethRpc = g.ethRpc.get()
+  echo "---------- startListeningToEvents 3"
   let newBlockCallback = g.getNewBlockCallback()
+  echo "---------- startListeningToEvents 4"
   g.runInInterval(newBlockCallback, DefaultBlockPollRate)
 
 proc batchAwaitBlockHandlingFuture(
@@ -454,6 +469,7 @@ proc startOnchainSync(
 ): Future[void] {.async: (raises: [Exception]).} =
   initializedGuard(g)
 
+  echo "---------- startOnchainSync 1"
   let ethRpc = g.ethRpc.get()
 
   # static block chunk size
@@ -463,6 +479,7 @@ proc startOnchainSync(
   # max number of futures to run concurrently
   let maxFutures = 10
 
+  echo "---------- startOnchainSync 2"
   var fromBlock: BlockNumber =
     if g.latestProcessedBlock > g.rlnContractDeployedBlockNumber:
       info "syncing from last processed block", blockNumber = g.latestProcessedBlock
@@ -472,34 +489,47 @@ proc startOnchainSync(
         blockNumber = g.rlnContractDeployedBlockNumber
       g.rlnContractDeployedBlockNumber
 
+  echo "---------- startOnchainSync 3"
   var futs = newSeq[Future[bool]]()
   var currentLatestBlock: BlockNumber
   g.retryWrapper(currentLatestBlock, "Failed to get the latest block number"):
     cast[BlockNumber](await ethRpc.provider.eth_blockNumber())
+  echo "---------- startOnchainSync 4"
 
   try:
     # we always want to sync from last processed block => latest
     # chunk events
     while true:
+      echo "---------- startOnchainSync fromBlock", fromBlock
+      echo "---------- startOnchainSync currentLatestBlock", currentLatestBlock
       # if the fromBlock is less than 2k blocks behind the current block
       # then fetch the new toBlock
       if fromBlock >= currentLatestBlock:
+        echo "---------- startOnchainSync 5"
         break
 
       if fromBlock + blockChunkSize > currentLatestBlock:
+        echo "---------- startOnchainSync 6"
         g.retryWrapper(currentLatestBlock, "Failed to get the latest block number"):
           cast[BlockNumber](await ethRpc.provider.eth_blockNumber())
 
       let toBlock = min(fromBlock + blockChunkSize, currentLatestBlock)
       debug "fetching events", fromBlock = fromBlock, toBlock = toBlock
+      echo "---------- startOnchainSync 7"
       await sleepAsync(rpcDelay)
+      echo "---------- startOnchainSync 8"
       futs.add(g.getAndHandleEvents(fromBlock, toBlock))
+      echo "---------- startOnchainSync 9"
       if futs.len >= maxFutures or toBlock == currentLatestBlock:
+        echo "---------- startOnchainSync 10"
         await g.batchAwaitBlockHandlingFuture(futs)
+        echo "---------- startOnchainSync 11"
         g.setMetadata(lastProcessedBlock = some(toBlock)).isOkOr:
           error "failed to persist rln metadata", error = $error
         futs = newSeq[Future[bool]]()
+        echo "---------- startOnchainSync 12"
       fromBlock = toBlock + 1
+      echo "---------- startOnchainSync 13"
   except CatchableError:
     raise newException(
       CatchableError,
@@ -508,6 +538,7 @@ proc startOnchainSync(
 
   # listen to blockheaders and contract events
   try:
+    echo "---------- startOnchainSync "
     await g.startListeningToEvents()
   except CatchableError:
     raise newException(