Problems uploading my mod to Steam

Good evening, I have been trawling around for a while but can’t find anything relating to the issue I have. Please, if I have missed it then by all means point me in the right direction.

I have been building a map for ARK, on my first attempt I managed to upload the mod to Steam, and is was available to subscribe to (though it was hidden).

However, it was just a simple crappy map so I have deleted it again. However, since I deleted the old mod I am unable to upload a mod from the dev kit to Steam I just get a greyed out upload button. I have cooked it as a map and also cooked it as a mod but neither allow me to upload it.

Any suggestions as to how I can fix this issue?


I have the same problem

Are all of the boxes filled in?