See if your family income exceeds the limits of the scholarship then you won't get it. Now the OTA is completed means that One Time Approval is done but it may occur that while approving the officer has disapproved your application as your family income have crossed and as a result its true that OTA is done but the approval status is disapproved. This can be a case. Although in order to be sure about it, I would recommend you to contact the scholarship department. The contact number you can get from the official website at the contact us section.

I hope this answer helps. All the very best for your future endeavors!