I have two problems:

First problem:
Can't download Youtube video.
My website is: http://idm.sharengay.com
I can't find Youtube services on admin panel. Can you activate this feature?

Second problem:
I found on many similar services. 
Ex: https://www.getfvid.com
It's can download HD, SD quality of any video on Facebook.
But I checked on Video Downloader Script only support to get SD quality Facebook videos.
Do you limit that like Youtube?
Or any method to resolve that problem?

Finally, I want full access to all feature of my script. Because I pay money to get that.