Looking at the description given above, I assume that you are referring to the "Document Cloud" storage or is it the general "Cloud" storage you are talking about?
If you have installed the Adobe Reader mobile application, then you may follow the following steps suggested in the help document Acrobat Reader Help for iOS: Opening PDFs in Acrobat Reader to open the pdf files in Adobe Reader app.
In general, files saved in "Document Cloud" storage using desktop application or via web are automatically accessible using mobile app's "Document Cloud" storage space.
Hope this is what you are looking for.
Excuse my English.
I think the problem is you can’t download a document saved in Acrobat cloud directly from the Acrobat App, isn’t it? You have to open Safari, access at Acrobat Cloud, open the document, download it by sharing in the App.
It would be better if you could do it directly from the App
Yes, you are correct. This is a design behavior of the application that it doesn't allow to download the "Document Cloud" file from the app itself. You can download the file using web browser.
Use this form to request new features or suggest modifications to existing features- Feature Request/Bug Report Form