I checked Newgrounds today, after I had removed 2 of my songs from Newgrounds, and the first thing I notice is "Wow, I remember having 12 songs after deleting my newest ones." And that's the thing, I did have 12 songs on Newgrounds. I scrolled down the song lust, and my first 2 songs Aurora and Thunderstorm, were gone. Just like that. I checked my projects to hopefully republish them, but apparently a NG Mod or Admin removed them AND unscouted me from the audio portal. So this is likely my goodbye to Newgrounds as it would be more practical to just post my music on YouTube or SoundCloud. This means that my songs will not be available in Geometry Dash or other third-party API partnered with Newgrounds.
ADR3-N
I saw that TomFulp removed your scouted status and likely is the person who removed your audio. You might ask him what it is that you did wrong.
Just in case, also check here and make sure you didn't violate any sampling rules or something obscure
https://www.newgrounds.com/wiki/help-information/terms-of-use/audio-guidelines
JLCMusic
My guess is that my audio got removed because I made them in BandLab, though the audio guidelines specifically state the BandLab mobile app, when I used the desktop site. I'll try and ask him soon.