qt wallet>info: add text if lightning is not available for wallet

electrum/gui/qt/main_window.py

@@ -2260,6 +2260,7 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, Logger):
             ks_type = str(keystore_types[0]) if keystore_types else _('No keystore')
             grid.addWidget(QLabel(ks_type), 4, 1)
         # lightning
+        grid.addWidget(QLabel(_('Lightning') + ':'), 5, 0)
         if self.wallet.can_have_lightning():
             if self.wallet.has_lightning():
                 lightning_b = QPushButton(_('Disable'))
@@ -2272,9 +2273,11 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, Logger):
                 lightning_b.clicked.connect(dialog.close)
                 lightning_b.clicked.connect(self.enable_lightning)
                 lightning_label = QLabel(_('Disabled'))
-            grid.addWidget(QLabel(_('Lightning')), 5, 0)
             grid.addWidget(lightning_label, 5, 1)
             grid.addWidget(lightning_b, 5, 2)
+        else:
+            grid.addWidget(QLabel(_("Not available for this wallet.")), 5, 1)
+            grid.addWidget(HelpButton(_("Lightning is currently restricted to HD wallets with p2wpkh addresses.")), 5, 2)
         vbox.addLayout(grid)
 
         labels_clayout = None