Pleas feedback - Rejected without explanation! Lufs Loudness

Rejected without explanation! I followed the standards Lufs Loudness and found no explanation for such rejection!
Who can help me?

https://soundcloud.com/giovanitramontin/energetic-ukulele-preview

Thanks

Is there a standard LUFS Loudness? What is it?

the “big Bell” is too loud and not very pretty and harmonious .

I did not use big bell, but a Celesta!

The sound of the celesta is similar to that of the glockenspiel, but with a much softer and more subtle timbre.

There is no standard established by law, but there is an acceptable industry standard for music to become commercial, they may even take this into account, but the return to the professional does not exist!