Update README.md

Author: simoninithomas

README.md

@@ -12,7 +12,19 @@ This repository contains the Deep Reinforcement Learning Course mdx files and no
 
 - **Sign up here** ➡️➡️➡️ http://eepurl.com/ic5ZUD
 
+## Course Maintenance Notice 🚧
 
+Please note that this **Deep Reinforcement Learning course is now in a low-maintenance state**. However, it **remains an excellent resource to learn both the theory and practical aspects of Deep Reinforcement Learning**.
+
+Keep in mind the following points:
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+- *Unit 7 (AI vs AI)* : This feature is currently non-functional. However, you can still train your agent to play soccer and observe its performance.
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+- *Leaderboard* : The leaderboard is no longer operational.
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+Aside from these points, all theory content and practical exercises remain fully accessible and effective for learning.
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+If you have any problem with one of the hands-on **please check the issue sections where the community give some solutions to bugs**.
 
 ## Citing the project