Repeating Group API Call

Hi - I am having trouble with the presentation of data from an external API request in a repeating group. I first set the “repeating group data source” to the correct API Connecter endpoint I have set up…

Then I add text to the repeating group and set the data source as the API call to find the “email”. See screenshot:

This then unfortunately, displays all of the options on the same line of the repeating group… See below:

What I need to do is this:

Display only one unique value per line item, but I want the overall repeating group to parse the data source only based upon the authorized user logged in… So essentially, the user is confirmed at the repeating group level, then the unique items related to that user are shown.

How can I do this? Thanks - Jon