diff --git a/calibre-plugin/config.py b/calibre-plugin/config.py
index bff7a1a..9744bce 100644
--- a/calibre-plugin/config.py
+++ b/calibre-plugin/config.py
@@ -215,6 +215,8 @@ class ConfigWidget(QWidget):
         self.button_export_key.setEnabled(activated)
         self.button_export_activation.setEnabled(activated)
 
+        self.resize(self.sizeHint())
+
         info_dialog(None, "Done", "Successfully imported authorization for " + ade_mail, show=True, show_copy_button=False)
 
 
@@ -270,6 +272,8 @@ class ConfigWidget(QWidget):
         self.button_export_key.setEnabled(True)
         self.button_export_activation.setEnabled(True)
 
+        self.resize(self.sizeHint())
+
         info_dialog(None, "Done", "Authorized to account " + mail, show=True, show_copy_button=False)
 
 
@@ -293,7 +297,8 @@ class ConfigWidget(QWidget):
 
         filters = [("DER Files", ["der"])]
 
-        filename = choose_save_file(self, "Export ADE keys", _("Export ADE keys"), filters, all_files=False)
+        filename = choose_save_file(self, "Export ADE keys", _("Export ADE keys"), filters, 
+                    all_files=False, initial_filename="adobe_encryption_key.der")
 
         if (filename is None):
             return
diff --git a/calibre-plugin/libadobe.py b/calibre-plugin/libadobe.py
index f0a2eeb..2caaf84 100644
--- a/calibre-plugin/libadobe.py
+++ b/calibre-plugin/libadobe.py
@@ -212,7 +212,7 @@ def sendPOSTHTTPRequest(URL: str, document: bytes, type: str, returnRC = False):
 
     if returnRC:
         return ret_code, content
-        
+
     return content
 
 
@@ -274,15 +274,13 @@ def addNonce():
     usec = dt.microsecond
     sec = (dt - datetime(1970,1,1)).total_seconds()
 
-    nonce320 = int(0x6f046000)
-    nonce321 = int(0x388a)
-    bigtime = int(sec * 1000)
 
-    nonce320 += int((bigtime & 0xFFFFFFFF) + usec/1000)
-    nonce321 += int(((bigtime >> 32) & 0xFFFFFFFF))
+    Ntime = int(int(sec * 1000) + usec/1000)
 
-    final = bytearray(nonce320.to_bytes(4, 'little'))
-    final.extend(nonce321.to_bytes(4, 'little'))
+    # Unixtime to gregorian timestamp
+    Ntime += 62167219200000
+
+    final = bytearray(Ntime.to_bytes(8, 'little'))
     tmp = 0
     final.extend(tmp.to_bytes(4, 'little'))
 
diff --git a/calibre-plugin/libadobeFulfill.py b/calibre-plugin/libadobeFulfill.py
index f2e4676..4b5d9b7 100644
--- a/calibre-plugin/libadobeFulfill.py
+++ b/calibre-plugin/libadobeFulfill.py
@@ -547,7 +547,7 @@ def performFulfillmentNotification(fulfillmentResultToken, forceOptional = False
         critical = True
 
         if element.get("critical", "yes") == "no":
-            critial = False
+            critical = False
             print("Notifying optional server %s" % (url))
         else: 
             print("Notifying server %s" % (url))