diff --git a/mautrix_appservice/state_store.py b/mautrix_appservice/state_store.py
index 03cab88a..1174dcde 100644
--- a/mautrix_appservice/state_store.py
+++ b/mautrix_appservice/state_store.py
@@ -99,8 +99,8 @@ class StateStore:
 
     def has_power_level(self, room, user, event):
         room_levels = self.power_levels.get(room, {})
-        required = room_levels["events"].get(event, 95)
-        has = room_levels["users"].get(user, 0)
+        required = room_levels.get("events", {}).get(event, 95)
+        has = room_levels.get("users", {}).get(user, 0)
         return has >= required
 
     def set_power_level(self, room, user, level):
@@ -109,6 +109,8 @@ class StateStore:
                 "users": {},
                 "events": {},
             }
+        elif "users" not in self.power_levels[room]:
+            self.power_levels[room]["users"] = {}
         self.power_levels[room]["users"][user] = level
         self._autosave()
 
diff --git a/mautrix_telegram/formatter.py b/mautrix_telegram/formatter.py
index 34125eaa..13c3ce89 100644
--- a/mautrix_telegram/formatter.py
+++ b/mautrix_telegram/formatter.py
@@ -254,8 +254,10 @@ async def telegram_event_to_matrix(evt, source, native_replies=False, message_li
                     body = (content["formatted_body"]
                             if "formatted_body" in content
                             else content["body"])
-                    reply_to_user = ("<a href='https://matrix.to/#/"
-                                     + f"{event['sender']}'>{event['sender']}</a>")
+                    sender = event['sender']
+                    puppet = p.Puppet.get_by_mxid(sender, create=False)
+                    displayname = puppet.displayname if puppet else sender
+                    reply_to_user = (f"<a href='https://matrix.to/#/{sender}'>{displayname}</a>")
                     reply_to_msg = (("<a href='https://matrix.to/#/"
                                      + f"{msg.mx_room}/{msg.mxid}'>Reply</a>")
                                     if message_link_in_reply else "Reply")
diff --git a/mautrix_telegram/user.py b/mautrix_telegram/user.py
index 47051463..4f92db26 100644
--- a/mautrix_telegram/user.py
+++ b/mautrix_telegram/user.py
@@ -16,13 +16,14 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 import logging
 import asyncio
+import platform
 
 from telethon.tl.types import *
 from telethon.tl.types import User as TLUser
 
 from .db import User as DBUser, Message as DBMessage
 from .tgclient import MautrixTelegramClient
-from . import portal as po, puppet as pu
+from . import portal as po, puppet as pu, __version__
 
 config = None
 
@@ -84,10 +85,15 @@ class User:
     # region Telegram connection management
 
     async def start(self):
+        device = f"{platform.system()} {platform.release()}"
+        sysversion = MautrixTelegramClient.__version__
         self.client = MautrixTelegramClient(self.mxid,
                                             config["telegram.api_id"],
                                             config["telegram.api_hash"],
-                                            loop=self.loop)
+                                            loop=self.loop,
+                                            app_version=__version__,
+                                            system_version=sysversion,
+                                            device_model=device)
         self.client.add_update_handler(self.update_catch)
         self.connected = await self.client.connect()
         if self.logged_in: