payserver: fix #8299

electrum/plugins/payserver/payserver.py

@@ -70,7 +70,6 @@ class PayServerPlugin(BasePlugin):
         if view_url := self.view_url(key):
             d['view_url'] = view_url
 
-
 class PayServer(Logger, EventListener):
 
     WWW_DIR = os.path.join(os.path.dirname(__file__), 'www')

electrum/plugins/payserver/qt.py

@@ -33,6 +33,18 @@ from .payserver import PayServerPlugin
 
 class Plugin(PayServerPlugin):
 
+    _init_qt_received = False
+
+    @hook
+    def init_qt(self, gui: 'ElectrumGui'):
+        if self._init_qt_received:  # only need/want the first signal
+            return
+        self._init_qt_received = True
+        # If the user just enabled the plugin, the 'load_wallet' hook would not
+        # get called for already loaded wallets, hence we call it manually for those:
+        for window in gui.windows:
+            self.daemon_wallet_loaded(gui.daemon, window.wallet)
+
     def requires_settings(self):
         return True
 
@@ -68,6 +80,8 @@ class Plugin(PayServerPlugin):
             self.config.set_key('payserver_address', str(address_e.text()))
             self.config.set_key('ssl_keyfile', str(keyfile_e.text()))
             self.config.set_key('ssl_certfile', str(certfile_e.text()))
+            # fixme: restart the server
+            window.show_message('Please restart Electrum to enable those changes')
 
     @hook
     def receive_list_menu(self, parent, menu, key):