[BUG]: Impersonate Feature Not Working

[motox986]

Describe the bug A clear and concise description of what the bug is.

Desktop (please complete the following information):

• Browser [e.g. Chrome, Firefox, Edge Chromium]
• Dynamics 365/Power Apps Version
• Admin/Non-admin
• Online/On-Premise
• Unified Interface/Classic Interface
• Model Driven App/Classic App
• Entity name, if it is an out-of-the-box entity

To Reproduce Steps to reproduce the behavior:

1. Go to 'Levelup for Dynamics' Extension
2. Click on 'Impersonate' tab
3. Enter user name and click 'Search User'
4. Nothing happens as a result, users to choose from don't get displayed

Expected behavior Select a user to impersonate after searching for a user.