Upload and pending photo

Hi all. Who knows the truth?
on the right is that if I have acquired 300 files, then I cannot send them all for verification. Every day I try to open files for review and with 20 photos ready before editing - send only 2 or 3 files. It happens in different ways. Who knows what’s behind the system, but in fact you can’t send files for verification.
I know about the exchange of 400 files per week!

And the files that I uploaded a month ago are still not sent for verification.
In short, I upload more and more new material, but I can't send almost anything.

it says that the files were sent successfully - but this is not true