Hi there,
Sorry for the delay in response.
As you say that the file shows up as 0 kb, that means the PDF is empty. It seems that file was not saved successfully to the Document Cloud.
It takes some time for processing and saving the scan.
Please make sure that you do not close the application until the file is successfully saved to the cloud.
If the file was not saved, then there is nothing much that can be done from our end.
Could you please check once if you have any other file saved with the similar name in the Document Cloud or in the application?
When you try to open the file in Adobe Scan, do you get any error message?
Did you try once to reboot the device?
Also, check if the application is updated to the latest version.
Let us know if you need any help.
Regards,
Meenakshi