I'm sorry Chaos. Based on what you said, it seems that Sefe is right.
This is what you said:
This file contains only readme with link for download, informations & terms for using the mission.
And again a quote from the submission instructions
File must contain: mission in pbo format, readme.txt file with mission and author informations
From what you said, I get the impression that there is no mission.pbo in the .zip, but only a link to download it from somewhere.
The reasoning behind why we accept only submissions with the mission file itself included in the .zip is simple. We want to guarantee that the file is always available. What if the site you have your mission goes down? What if the file is deleted from the server? OFPEC Missions Depot will be left with a mission entry, with no actual mission available.
So, if a submitted .zip doesn't include the mission file, it will be regarded as faulty and removed from the database.
What's also concerning is that I still can't see your mission in the pendings list. This may be because A) you haven't gone through the whole submission process, but just uploaded it to ftp or B) the MD upload may be broken.
Frankly there's nothing I can do more about option A. Option B I will check out this evening when I have time to test through the uploading and creating a database entry.