instagram sandbox user invite sent but where does the user accept it?

Question

I am consuming the instagram and have been able to sent the invite to my second user. However when the second user logs in to this link:

https://www.instagram.com/oauth/authorize/?client_id=XXXXXXX&redirect_uri=yyyyyyyyyyy://&response_type=token

they just get

{"code": 403, "error_type": "OAuthForbiddenException", "error_message": "You are not a sandbox user of this client"}

I have also logged in as that user to the official instagram app and still I have no place to accept the invite. How do the sandbox users accept their invites to use my app?

Answer 1

Figured it out.

I did read the doc: where it says

"To manage the list of sandbox users for a given app, you can go to the Sandbox tab in your client configuration screen. There you will be able to add and remove the sandbox users for your app, up to a maximum of 10 users. Note that the admin of the app is always a sandbox user, so you can effectively add up to 9 additional 'sandbox users'.

After adding users to the list, they will have to accept your invitation before actually becoming sandbox users. To accept the invitation, they can go to the 'Sandbox Invites' button on the top bar of the developer site. In the 'Sandbox Invites' page people can accept or reject invitations, and also stop being sandbox users for a given app."

I tried it but it wasn't working - probably due to a delay. After 5 minutes, I was able to see the invite and get through.