Problem fetching images, and displaying in Creator App

Problem fetching images, and displaying in Creator App

I'm designing a mobile interview process application for my school system. Applicants can add a photo to their registration, but getting their uploaded image to display in another form was problematic. Instead of just displaying the image field value, I had to use:

person.Portrait.replaceFirst("sharedBy","[MY USERNAME]").replaceFirst("appLinkName","fcss-job-fair").replaceFirst("viewLinkName","Registrants_Report").replaceFirst("fieldName","Portrait");

This allowed me to display the image in a Notes field on another report - when a candidate's ID number is scanned (via QR code), it fetches their information from their Registration. Then Deluge updates a blank Notes field with their name, email, etc. - and ideally their image. It works on the web app, but the image doesn't display on the mobile app (using iOS version). All other text shows when Deluge updates the Notes field, just not the image.

Can you help me out? I've already granted Support access to the app.