Can anybody tell me why my Photography CMS got hard rejected

I have made it by myself and do not use any copyright materials. This script uses -
Bootstrap 4,
& CI
this product rejected in few hours after upload.
The name of the product i enter is Eventigo.Here is website -

not sure this wouldn’t belong on TF not CC

Either way the execution is not there yet

Not fully mobile responsive

Images load cropped in the gallery on mobile

this is an CI project so it must be on CC.
Is there only one problem of Responsive?
I can fix it and improve full website design, after that is it possible to get my product approve over CC.
Thanks –