Hello Chao,
Glad to hear from you.
1. The new 99 EAs are just on the same place as the old ones. Let me know which course are you talking about, and I will tell you the number of the lecture.
2. I guess you failed to compile the Experts. Make sure you are on MT4 and not MT5. The Portfolio experts are working only on MT4.
If you are on MT4 just click one of them and it will open you the Meta Editor. Click on Compile above and see if it will work.
Let me know how it goes, attach some pictures or screenshot so I can see better.
Kind regards,
Petko A