Hard reject, whats wrong?

HI!

My Sketch Mockup got hard rejected with this comment:
“We have completed our review of “Milana Hotel - Sketch Template” and unfortunately we found it isn’t at the quality standard required to move forward, and you won’t be able to re-submit this item again.”

Demo is here:
https://sketch.cloud/s/vrDE8/p/milana-hotel

Please help me to figure out what is wrong.
Thank you!