diff --git a/.gitignore b/.gitignore
index 25125fb..443579e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 /calibre-plugin/keyextract/*.exe
 /calibre-plugin/module_id.txt
 /calibre-plugin/__pycache__
+/calibre-plugin/*.pyc
diff --git a/calibre-plugin/fulfill.py b/calibre-plugin/fulfill.py
index ee4103e..da36c08 100644
--- a/calibre-plugin/fulfill.py
+++ b/calibre-plugin/fulfill.py
@@ -8,9 +8,6 @@ This is an experimental Python version of libgourou.
 # pyright: reportUndefinedVariable=false
 
 import sys, os, time, shutil
-if sys.version_info[0] < 3:
-    print("This script requires Python 3.")
-    exit(1)
 
 import zipfile
 from lxml import etree
diff --git a/calibre-plugin/register_ADE_account.py b/calibre-plugin/register_ADE_account.py
index 47c73a4..6ba0e76 100644
--- a/calibre-plugin/register_ADE_account.py
+++ b/calibre-plugin/register_ADE_account.py
@@ -7,10 +7,6 @@ This is an experimental Python version of libgourou.
 
 import getpass, sys
 
-if sys.version_info[0] < 3:
-    print("This script requires Python 3.")
-    exit(1)
-
 from libadobe import createDeviceKeyFile, VAR_VER_SUPP_CONFIG_NAMES
 from libadobeAccount import createDeviceFile, createUser, signIn, activateDevice
 
@@ -32,9 +28,9 @@ def main():
 
 
     if (VAR_MAIL == ""):
-        VAR_MAIL = input("Please enter your AdobeID: ")
+        VAR_MAIL = input("Please enter your AdobeID (or press enter for anonymous auth): ")
     
-    if (VAR_PASS == ""):
+    if (VAR_PASS == "" and VAR_MAIL != ""):
         VAR_PASS = getpass.getpass("Please enter the password for your AdobeID: ")
 
     if (VAR_VER is None):
@@ -44,8 +40,8 @@ def main():
         print("Invalid version")
         exit(1)
 
-    if (VAR_MAIL == "" or VAR_PASS == ""):
-        print("Empty credential, aborting")
+    if (VAR_MAIL != "" and VAR_PASS == ""):
+        print("Empty password, aborting")
         exit(1)
 
 
@@ -61,7 +57,11 @@ def main():
         print("Error, couldn't create user: %s" % resp)
         exit(1)
 
-    success, resp = signIn("AdobeID", VAR_MAIL, VAR_PASS)
+    if VAR_MAIL == "": 
+        success, resp = signIn("anonymous", "", "")
+    else:    
+        success, resp = signIn("AdobeID", VAR_MAIL, VAR_PASS)
+        
     if (success is False):
         print("Login unsuccessful: " + resp)
         exit(1)
diff --git a/tests/main.py b/tests/main.py
index 8c86794..a9115f9 100755
--- a/tests/main.py
+++ b/tests/main.py
@@ -12,6 +12,7 @@ if sys.version_info[0] >= 3:
 else: 
     from mock import patch
 from lxml import etree
+import binascii
 
 
 try: 
@@ -187,10 +188,7 @@ class TestAdobe(unittest.TestCase):
 
         key = rsa.PrivateKey.load_pkcs1(RSA.importKey(base64.b64decode(mock_signing_key)).exportKey())
         keylen = rsa.pkcs1.common.byte_size(key.n)
-        if sys.version_info[0] >= 3:
-            padded = rsa.pkcs1._pad_for_signing(bytes(payload_bytes), keylen)
-        else: 
-            padded = rsa.pkcs1._pad_for_signing(bytes(payload_bytes), keylen)
+        padded = rsa.pkcs1._pad_for_signing(bytes(payload_bytes), keylen)
         payload = rsa.pkcs1.transform.bytes2int(padded)
         encrypted = key.blinded_encrypt(payload)
         block = rsa.pkcs1.transform.int2bytes(encrypted, keylen)
@@ -310,10 +308,7 @@ class TestAdobe(unittest.TestCase):
         expected_msg.extend(bytearray(struct.pack("B", len(passwd))))
         expected_msg.extend(bytearray(passwd.encode("latin-1")))
 
-        if sys.version_info[0] >= 3:
-            self.assertEqual(msg.hex(), expected_msg.hex(), "devkey encryption returned invalid result")
-        else:
-            self.assertEqual(msg, expected_msg, "devkey encryption returned invalid result")
+        self.assertEqual(binascii.hexlify(msg), binascii.hexlify(expected_msg), "devkey encryption returned invalid result")