@Josephine Skinner, Thanks for posting in Q&A. From your description, it seems download rippling application is asking for a security credential device PIN. Based on my experience, it seems the action needs to elevate permission.
You can insert the device PIN or enter admin account and password to continue. If the app is an execution file, to let standard user to complete tasks that require elevated privilege, you can also consider using Endpoint Privilege Management to do this. Here is a link with more details for the reference:
https://video2.skills-academy.com/en-us/mem/intune/protect/epm-overview
Hope the above information can help.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.