One possibility is that if the picture is linking from another space where you do have access permissions but the other users don't, then that would mean that they can not see the attachment.
Try uploading the picture directly from your storage device.
Hi Community! Kesha (kay-sha) from the Confluence marketing team here! Can you share stories with us on how your non-technical (think Marketing, Sales, HR, legal, etc.) teams are using Confluen...
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