feature(css): added popup css

src/Reminder.php

@@ -41,7 +41,7 @@ class Reminder {
 	}
 
 	private function should_display() {
-		return get_locale() === 'pl_PL' && ! $this->is_plugin_activated();
+		return get_locale() !== 'pl_PL' && ! $this->is_plugin_activated();
 	}
 
 	private function is_plugin_activated() {