diff --git a/src/danog/MadelineProto/Connection.php b/src/danog/MadelineProto/Connection.php
index 654338a6d..3fdd162a5 100644
--- a/src/danog/MadelineProto/Connection.php
+++ b/src/danog/MadelineProto/Connection.php
@@ -347,7 +347,7 @@ class Connection
         if (!isset($this->waiter)) {
             $this->waiter = new HttpWaitLoop($this);
         }
-        if (!isset($this->pinger) && !$this->ctx->isMedia()) { // && ($this->ctx->hasStreamName(WssStream::class) || $this->ctx->hasStreamName(WsStream::class))) {
+        if (!isset($this->pinger) && !$this->ctx->isMedia() && !$this->ctx->isCDN()) { // && ($this->ctx->hasStreamName(WssStream::class) || $this->ctx->hasStreamName(WsStream::class))) {
             $this->pinger = new PingLoop($this);
         }
         foreach ($this->new_outgoing as $message_id => $message) {
diff --git a/src/danog/MadelineProto/MTProtoTools/AuthKeyHandler.php b/src/danog/MadelineProto/MTProtoTools/AuthKeyHandler.php
index 32c10056c..649f27fa5 100644
--- a/src/danog/MadelineProto/MTProtoTools/AuthKeyHandler.php
+++ b/src/danog/MadelineProto/MTProtoTools/AuthKeyHandler.php
@@ -139,10 +139,7 @@ trait AuthKeyHandler
                 $pq = Tools::unpackSignedLong(\strrev($pq_bytes));
                 foreach ([
                     'native_single_cpp',
-                    'python_single_alt',
-                    'python_single',
                     'native_single',
-                    'wolfram'
                 ] as $method) {
                     $this->logger->logger("Factorizing with $method (please wait, might take a while)");
                     if ($method !== 'native_single_cpp') {