How to prepare for Paper P5 – Lectures

Hi.

I was wondering why the lectures from this link are not working anymore.
I found them quite useful in preparing for P5 revision, since I was exempted from F5.
Any possibility they could be uploaded again?

Link:

https://opentuition.com/articles/p5/how-to-prepare-for-paper-p5/

‘The most important topics from the Paper F5 syllabus needed for P5, are as follows:’

thanks..