Hey there Salabaiko.
Your track is quite nice, not perfectly unique ;), but better than many other tracks I’ve heard here (which btw all got accepted).
The reason for the hard reject is most probably your production quality. I’m not an Mixing Engineer, but your mix/master doesn’t sound good enough IMHO. I’m not familiar with resubmissions of hard rejected tracks, but I’d rework it, make A/B comparisons, etc. and ask support if I could resubmit it.
Keep it up.