I'm not the Wapka Admin and I don't know how they handle sites that host copyrighted content, but I recommend that you don't upload such files as it can cause serious problems for Wapka.
For example, the 4Webku platform had its domain suspended after the Admin received a DMCA on account of two websites that were sharing copyrighted content.
As far as I know, more than half of the websites on Wapka also share this type of content (such as music, images, audios, videos, etc).
I believe the Fair Use policy does not apply in this case, even if the sites explicitly say they are for educational purposes.
If we want to keep Wapka running for a long time, we must abide by the law, even if Wapka doesn't explicitly request it.
Long live Wapka!