Issue trying to download apps (Drafted zone)

I would like to ask for your help, to know why i cant get my download archive (app-file) when i try to download it manually , the page like to do it, but really does not download the app file to my computer, or at least supposed that the download occurs correctly, but then nothing its avalaible.
I have 4 app on the Drafted area, in the past I download some of them , but now when I worked in new one, and I tryed to download it, I realesed of this situation.
My question.-
1.- I am doing something incorrectly?
2.- Some problem whit the page?
3.- Or I need to do something additional?
Some recomendation?, I apreciate your comments Team…
Regards CT
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