Here is how to reproduce the issue:
Enter the phone number you want to view details for.
If they signed up for the platform, you will get all their details and see the documents they uploaded. They don’t do any mobile number OTP verification.
For a demo: I created a dummy profile using 9324116954. Try entering this number in the form. Don’t worry it’s unused phone number from angel broking support team, so no harm to anyone.
The example shows the account which is not fully created. While I am yet to test for a fully created account, I think it might also work for them too (although with some extra complicated steps).
Edit: I have already contacted them. Posting it to raise awareness since they obviously don’t care.