A customer is unable to see attachments that our Support Desk has added to the ticket, via the portal.
File type: .zip
Size: Under the allowed limit
Create Attachment security option includes the group our customers are in, the current assignee, reporter, and Service Project Customer - Portal Access. Zip option is turned on, and even I as an admin get nothing from the file when I download it via the portal or in the agent view.
The system allowed for the Support Desk to upload to the ticket and they do show in the attachments section, but doesn't show anything when I download it.