diff --git a/changelog b/changelog
index 17e1ee5..f317399 100644
--- a/changelog
+++ b/changelog
@@ -1,3 +1,6 @@
+0.8.0b8:
+  Ping wired doorbell.
+  Try proper device id for cloud flare
 0.8.0b7:
   Allow more MQTT config.
   Fix headers.
diff --git a/pyaarlo/__init__.py b/pyaarlo/__init__.py
index 558d982..1418b98 100644
--- a/pyaarlo/__init__.py
+++ b/pyaarlo/__init__.py
@@ -45,7 +45,7 @@
 
 _LOGGER = logging.getLogger("pyaarlo")
 
-__version__ = "0.8.0b7"
+__version__ = "0.8.0b8"
 
 
 class PyArlo(object):
diff --git a/pyaarlo/backend.py b/pyaarlo/backend.py
index ac9b7e8..2e810a9 100644
--- a/pyaarlo/backend.py
+++ b/pyaarlo/backend.py
@@ -48,6 +48,7 @@ class ArloBackEnd(object):
     _session_lock = threading.Lock()
     _session_info = {}
     _multi_location = False
+    _user_device_id = None
 
     def __init__(self, arlo):
 
@@ -63,6 +64,7 @@ def __init__(self, arlo):
         self._resource_types = DEFAULT_RESOURCES
 
         self._load_session()
+        self._user_device_id = str(uuid.uuid4())
 
         # event thread stuff
         self._event_thread = None
@@ -149,6 +151,7 @@ def _request(
         raw=False,
         timeout=None,
         host=None,
+        authpost=False,
     ):
         if params is None:
             params = {}
@@ -160,9 +163,13 @@ def _request(
             with self._req_lock:
                 if host is None:
                     host = self._arlo.cfg.host
-                tid = self._transaction_id()
-                url = self._build_url(host + path, tid)
-                headers['x-transaction-id'] = tid
+                if authpost:
+                    url = host + path
+                else:
+                    tid = self._transaction_id()
+                    url = self._build_url(host + path, tid)
+                    headers['x-transaction-id'] = tid
+
                 self.vdebug("request-url={}".format(url))
                 self.vdebug("request-params=\n{}".format(pprint.pformat(params)))
                 self.vdebug("request-headers=\n{}".format(pprint.pformat(headers)))
@@ -675,7 +682,7 @@ def _auth(self):
             "Referer": REFERER_HOST,
             "Source": "arloCamWeb",
             "User-Agent": self._user_agent,
-            "x-user-device-id": self._user_id,
+            "x-user-device-id": self._user_device_id,
             "x-user-device-automation-name": "QlJPV1NFUg==",
             "x-user-device-type": "BROWSER",
         }
@@ -756,7 +763,12 @@ def _auth(self):
                 self.debug(
                     "starting auth with {}".format(self._arlo.cfg.tfa_type)
                 )
-                body = self.auth_post(AUTH_START_PATH, {"factorId": factor_id}, headers)
+                payload = {
+                    "factorId": factor_id,
+                    "factorType": "BROWSER",
+                    "userId": self._user_id
+                }
+                body = self.auth_post(AUTH_START_PATH, payload, headers)
                 if body is None:
                     self._arlo.error("2fa startAuth failed")
                     return False
@@ -826,7 +838,7 @@ def _validate(self):
             "Referer": REFERER_HOST,
             "User-Agent": self._user_agent,
             "Source": "arloCamWeb",
-            "x-user-device-id": self._user_id,
+            "x-user-device-id": self._user_device_id,
             "x-user-device-automation-name": "QlJPV1NFUg==",
             "x-user-device-type": "BROWSER",
         }
@@ -1076,14 +1088,14 @@ def post(
 
     def auth_post(self, path, params=None, headers=None, raw=False, timeout=None):
         return self._request(
-            path, "POST", params, headers, False, raw, timeout, self._arlo.cfg.auth_host
+            path, "POST", params, headers, False, raw, timeout, self._arlo.cfg.auth_host, authpost=True
         )
 
     def auth_get(
         self, path, params=None, headers=None, stream=False, raw=False, timeout=None
     ):
         return self._request(
-            path, "GET", params, headers, stream, raw, timeout, self._arlo.cfg.auth_host
+            path, "GET", params, headers, stream, raw, timeout, self._arlo.cfg.auth_host, authpost=True
         )
 
     @property
diff --git a/pyaarlo/base.py b/pyaarlo/base.py
index 5a84506..ef7c0b3 100644
--- a/pyaarlo/base.py
+++ b/pyaarlo/base.py
@@ -23,6 +23,7 @@
     MODEL_HUB,
     MODEL_PRO_3_FLOODLIGHT,
     MODEL_PRO_4,
+    MODEL_WIRED_VIDEO_DOORBELL,
     MODEL_WIREFREE_VIDEO_DOORBELL,
     PING_CAPABILITY,
     RESOURCE_CAPABILITY,
@@ -553,8 +554,18 @@ def has_capability(self, cap):
                 return True
 
         if cap in (PING_CAPABILITY,):
+
+            # Always true for these devices.
             if self.model_id.startswith(MODEL_BABY):
                 return True
+            if self.model_id.startswith(MODEL_WIRED_VIDEO_DOORBELL):
+                return True
+
+            # Don't ping these devices ever.
+            if self.model_id.startswith(
+                    (MODEL_WIREFREE_VIDEO_DOORBELL, MODEL_ESSENTIAL, MODEL_PRO_3_FLOODLIGHT, MODEL_PRO_4)
+            ):
+                return False
 
             # We have to be careful pinging some base stations because it can rapidly
             # drain the battery power. Don't ping if:
@@ -566,12 +577,6 @@ def has_capability(self, cap):
                     if self.using_wifi:
                         return False
 
-            # Don't ping these devices ever.
-            if self.model_id.startswith(
-                    (MODEL_WIREFREE_VIDEO_DOORBELL, MODEL_ESSENTIAL, MODEL_PRO_3_FLOODLIGHT, MODEL_PRO_4)
-            ):
-                return False
-
             # All others, then ping.
             return True
 
diff --git a/setup.py b/setup.py
index 6624741..0ba15fe 100644
--- a/setup.py
+++ b/setup.py
@@ -11,7 +11,7 @@ def readme():
 setup(
 
     name='pyaarlo',
-    version='0.8.0b7',
+    version='0.8.0b8',
     packages=['pyaarlo'],
 
     python_requires='>=3.6',