Links to download, images uploaded with an order no longer work

-- url of the page with the problem -- : www.bromarprintstore.com/
-- HikaShop version -- : 6.1.0
-- Joomla version -- : 4.4.14
-- PHP version -- : 8.3.27
-- Browser(s) name and version -- : chrome

Hi,
Recently the links received in the Notification Email to the shop owner have ceased to take them to the image to download.. When the recipient clicks on the link in the email, they are taken to the sites' login page instead of to the uploaded image. However if we right click on the image in the order within the backend of the site and choose "Open image in new tab" it works fine. Comparing the URL in both, they are identical. They are al ready logged in as super admins before they click on the link in the email. The url generated for example would be www.bromarprintstore.com/administrator/i...lsaWNlbnQtMi5qcGc%3D
Any ideas what has changed or why this wouldn't be working?