I am facing above issue on a senstive field private_ip_address

that I created on the contacts object.
I have added read write permission to my private app.
still facing this issue while access the field via get endpoint :
https://api.hubapi.com/crm/v3/objects/contacts{email}?idProperty=email&properties=private_ip_address

error:
We are currently facing error on the api :
{“status”:”error”,”message”:”App not authorized to access these properties: [private_ip_address]nIf ignoring sensitive properties would be preferred for this app, you can configure this exception to be ignored: 

If I use the same access token and use the below api endpoint it works:
https://api.hubapi.com/crm/v3/objects/contacts/{contactId}?properties=private_ip_address

I am not able to find a reason why?