diff --git a/qtribu/gui/dlg_settings.py b/qtribu/gui/dlg_settings.py
index 1ecdaf47..b6e9ff7e 100644
--- a/qtribu/gui/dlg_settings.py
+++ b/qtribu/gui/dlg_settings.py
@@ -9,7 +9,7 @@
 from pathlib import Path
 
 # PyQGIS
-from qgis.core import QgsApplication
+from qgis.core import Qgis, QgsApplication
 from qgis.gui import QgsOptionsPageWidget, QgsOptionsWidgetFactory
 from qgis.PyQt import uic
 from qgis.PyQt.QtCore import Qt
@@ -105,7 +105,7 @@ def apply(self):
         settings.license_global_accept = self.chb_license_global_accept.isChecked()
 
         # qchat
-        settings.qchat_instance_uri = self.lne_qchat_instance_uri.text()
+        settings.qchat_instance_uri = self.cbb_qchat_instance_uri.currentText()
         settings.qchat_activate_cheatcode = self.ckb_cheatcodes.isChecked()
         settings.qchat_display_admin_messages = (
             self.ckb_display_admin_messages.isChecked()
@@ -143,7 +143,13 @@ def load_settings(self) -> None:
         self.chb_license_global_accept.setChecked(settings.license_global_accept)
 
         # qchat
-        self.lne_qchat_instance_uri.setText(settings.qchat_instance_uri)
+        instance_index = self.cbb_qchat_instance_uri.findText(
+            settings.qchat_instance_uri, Qt.MatchFixedString
+        )
+        if instance_index >= 0:
+            self.cbb_qchat_instance_uri.setCurrentIndex(instance_index)
+        else:
+            self.cbb_qchat_instance_uri.setCurrentText(settings.qchat_instance_uri)
         self.ckb_cheatcodes.setChecked(settings.qchat_activate_cheatcode)
         self.ckb_display_admin_messages.setChecked(
             settings.qchat_display_admin_messages
@@ -162,16 +168,19 @@ def load_settings(self) -> None:
         self.lbl_version_saved_value.setText(settings.version)
 
     def show_instance_rules(self) -> None:
-        instance_url = self.lne_qchat_instance_uri.text()
-        client = QChatApiClient(instance_url)
-        rules = client.get_rules()
-        QMessageBox.information(
-            self,
-            self.tr("Instance rules"),
-            self.tr("Instance rules ({instance_url}):\n\n{rules}").format(
-                instance_url=instance_url, rules=rules["rules"]
-            ),
-        )
+        instance_url = self.cbb_qchat_instance_uri.currentText()
+        try:
+            client = QChatApiClient(instance_url)
+            rules = client.get_rules()
+            QMessageBox.information(
+                self,
+                self.tr("Instance rules"),
+                self.tr("Instance rules ({instance_url}):\n\n{rules}").format(
+                    instance_url=instance_url, rules=rules["rules"]
+                ),
+            )
+        except Exception as e:
+            self.log(message=str(e), log_level=Qgis.Critical)
 
     def on_ring_tone_changed(self) -> None:
         """
diff --git a/qtribu/gui/dlg_settings.ui b/qtribu/gui/dlg_settings.ui
index 53d52368..ff88787a 100644
--- a/qtribu/gui/dlg_settings.ui
+++ b/qtribu/gui/dlg_settings.ui
@@ -316,7 +316,30 @@
          </widget>
         </item>
         <item>
-         <widget class="QLineEdit" name="lne_qchat_instance_uri"/>
+         <widget class="QgsSymbolButton" name="mSymbolButton"/>
+        </item>
+        <item>
+         <widget class="QComboBox" name="cbb_qchat_instance_uri">
+          <property name="sizePolicy">
+           <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+            <horstretch>0</horstretch>
+            <verstretch>0</verstretch>
+           </sizepolicy>
+          </property>
+          <property name="editable">
+           <bool>true</bool>
+          </property>
+          <item>
+           <property name="text">
+            <string>https://gischat.geotribu.net</string>
+           </property>
+          </item>
+          <item>
+           <property name="text">
+            <string>https://gischat.geotribu.fr</string>
+           </property>
+          </item>
+         </widget>
         </item>
         <item>
          <widget class="QPushButton" name="btn_rules">
@@ -653,6 +676,11 @@
   </layout>
  </widget>
  <customwidgets>
+  <customwidget>
+   <class>QgsSymbolButton</class>
+   <extends>QToolButton</extends>
+   <header>qgssymbolbutton.h</header>
+  </customwidget>
   <customwidget>
    <class>AuthoringWidget</class>
    <extends>QWidget</extends>