diff --git a/.gitignore b/.gitignore
index 535b0d7..86d1a68 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,7 +11,7 @@ __pycache__
 # Dev files
 /env
 /cache
+/*.jar
 log.txt
-cookies.jar
 settings.json
 /lang/English.json
diff --git a/constants.py b/constants.py
index 485b360..4b7961e 100644
--- a/constants.py
+++ b/constants.py
@@ -6,8 +6,7 @@ from pathlib import Path
 from copy import deepcopy
 from enum import Enum, auto
 from datetime import timedelta
-from collections import namedtuple
-from typing import Any, Dict, Literal, NewType, TYPE_CHECKING
+from typing import Any, Dict, Literal, NamedTuple, NewType, TYPE_CHECKING
 
 from yarl import URL
 
@@ -85,7 +84,11 @@ FILE_FORMATTER = logging.Formatter(
     datefmt="%Y-%m-%d %H:%M:%S",
 )
 OUTPUT_FORMATTER = logging.Formatter("{levelname}: {message}", style='{', datefmt="%H:%M:%S")
-ClientInfo = namedtuple("ClientInfo", ["CLIENT_ID", "USER_AGENT"])
+
+
+class ClientInfo(NamedTuple):
+    CLIENT_ID: str
+    USER_AGENT: str
 
 
 class ClientType:
diff --git a/gui.py b/gui.py
index f50b181..ab47ba7 100644
--- a/gui.py
+++ b/gui.py
@@ -474,10 +474,10 @@ class LoginForm:
                 self._pass_entry.get(),
                 self._token_entry.get().strip(),
             )
-            # basic input data validation
+            # basic input data validation: 3-25 characters in length, only ascii and underscores
             if (
-                not 3 <= len(login_data.username) <= 25  # 3-25 characters in length
-                and re.match(r'^[a-zA-Z0-9_]+$', login_data.username)  # only ascii and underscores
+                not 3 <= len(login_data.username) <= 25
+                and re.match(r'^[a-zA-Z0-9_]+$', login_data.username)
             ):
                 self.clear(login=True)
                 continue
diff --git a/twitch.py b/twitch.py
index 5d45088..721e453 100644
--- a/twitch.py
+++ b/twitch.py
@@ -444,7 +444,7 @@ class _AuthState:
             jar = cast(aiohttp.CookieJar, session.cookie_jar)
         if not self._hasattrs("client_version", "device_id"):
             async with self._twitch.request(
-                "GET", BASE_URL, headers=self.headers()  # (user_agent=ANDROID_USER_AGENT)
+                "GET", BASE_URL, headers=self.headers()
             ) as response:
                 page_html = await response.text("utf8")
                 match = re.search(r'twilightBuildID="([-a-z0-9]+)"', page_html)