I followed the guideline on how to create an app where you can upload file from airtable, but when i click on list, the outcome is url from cloufinary are displayed as they are.
you have to use call cell or from list, when got cell use get value of that cell instead of link. or select list item(if you have stored links in a list with help of get column)
as i have seen you are using get cell and after go cell changing screen with start value, so when Screen4 Initialize use get start value instead of Url you are using at 2nd number of join block.