When sharing a link to an attachment from a task on desktop a ?view=open parameter is provided for easy previewing by recipients however in mobile (android) it is a direct file link which prompts a download. Please make it a preview with an optional download.

See examples:

Desktop attachment (downloads file):

https://<workspace-id>.p.clickup-attachments.com/<space-id>/<attachment-id>/Screenshot.jpg

This allows easy proofing and should be consistent from desktop to the mobile app.

Desktop attachment (opens preview as expected):

https://<workspace-id>.p.clickup-attachments.com/<space-id>/<attachment-id>/Screenshot.jpg?view=open