Added hint

app/src/main/res/layout/fragment_options_misc.xml

@@ -71,6 +71,18 @@
                 app:layout_constraintTop_toBottomOf="@id/tvSubscriptionPro"
                 app:switchPadding="12dp" />
 
+            <TextView
+                android:id="@+id/tvSubscribedOnlyHint"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_marginEnd="48dp"
+                android:text="@string/title_advanced_subscribed_only_hint"
+                android:textAppearance="@style/TextAppearance.AppCompat.Small"
+                android:textStyle="italic"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toBottomOf="@id/swSubscribedOnly" />
+
             <androidx.appcompat.widget.SwitchCompat
                 android:id="@+id/swEnglish"
                 android:layout_width="match_parent"
@@ -78,7 +90,7 @@
                 android:layout_marginTop="12dp"
                 android:text="@string/title_advanced_english"
                 app:layout_constraintStart_toStartOf="parent"
-                app:layout_constraintTop_toBottomOf="@id/swSubscribedOnly"
+                app:layout_constraintTop_toBottomOf="@id/tvSubscribedOnlyHint"
                 app:switchPadding="12dp" />
 
             <TextView

app/src/main/res/values/strings.xml

@@ -251,6 +251,7 @@
     <string name="title_advanced_sender_hint">Most providers do not allow modified sender addresses</string>
 
     <string name="title_advanced_badge_hint">Only available on supported launchers</string>
+    <string name="title_advanced_subscribed_only_hint">Enabling this will delete all local folders without subscription</string>
     <string name="title_advanced_english_hint">This will restart the app</string>
     <string name="title_advanced_paranoid_hint">See the FAQ for details</string>
     <string name="title_advanced_debug_hint">Enable extra logging and show debug information at various places</string>