diff --git a/gui/qt/main_window.py b/gui/qt/main_window.py
index c8879fa3..7ee1c3b6 100644
--- a/gui/qt/main_window.py
+++ b/gui/qt/main_window.py
@@ -1197,7 +1197,7 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, PrintError):
 
         grid.addLayout(vbox_feecontrol, 5, 1, 1, -1)
 
-        if not self.config.get('show_fee', False):
+        if not self.config.get('show_fee', True):
             self.fee_adv_controls.setVisible(False)
 
         self.preview_button = EnterButton(_("Preview"), self.do_preview)
@@ -2662,7 +2662,7 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, PrintError):
         fee_widgets.append((fee_type_label, fee_type_combo))
 
         feebox_cb = QCheckBox(_('Edit fees manually'))
-        feebox_cb.setChecked(self.config.get('show_fee', False))
+        feebox_cb.setChecked(self.config.get('show_fee', True))
         feebox_cb.setToolTip(_("Show fee edit box in send tab."))
         def on_feebox(x):
             self.config.set_key('show_fee', x == Qt.Checked)
diff --git a/lib/simple_config.py b/lib/simple_config.py
index 8baa3adb..8a80b5f7 100644
--- a/lib/simple_config.py
+++ b/lib/simple_config.py
@@ -434,7 +434,7 @@ class SimpleConfig(PrintError):
             return self.has_fee_etas()
 
     def is_dynfee(self):
-        return bool(self.get('dynamic_fees', True))
+        return bool(self.get('dynamic_fees', False))
 
     def use_mempool_fees(self):
         return False
diff --git a/lib/util.py b/lib/util.py
index 48602600..c47150de 100644
--- a/lib/util.py
+++ b/lib/util.py
@@ -506,10 +506,10 @@ def time_difference(distance_in_time, include_seconds):
         return "over %d years" % (round(distance_in_minutes / 525600))
 
 mainnet_block_explorers = {
-    'blockexplorer.com': ('https://zclassic.blockexplorer.com/blocks/',
-                        {'tx': 'transactions/', 'addr': 'addresses/'}),
-    'system default': ('blockchain:/',
-                        {'tx': 'tx/', 'addr': 'address/'}),
+    'zclele.duckdns.org:3001': ('http://zclele.duckdns.org:3001',
+                        {'tx': 'tx', 'addr': 'address'}),
+    'zclassic-ce.io': ('http://zclassic-ce.io',
+                        {'tx': 'tx', 'addr': 'address'}),
 }
 
 testnet_block_explorers = {
@@ -524,7 +524,7 @@ def block_explorer_info():
     return testnet_block_explorers if constants.net.TESTNET else mainnet_block_explorers
 
 def block_explorer(config):
-    return config.get('block_explorer', 'blockexplorer.com')
+    return config.get('block_explorer', 'zclassic-ce.io')
 
 def block_explorer_tuple(config):
     return block_explorer_info().get(block_explorer(config))