This is the response i got from them after a day of chatting
Hi ,
With reference to your raised email, we understand that you are trying to install the Navi application.
However, we regret to inform you that, for security reasons, the Navi app can no longer be used on your device.
Hence, we request you to kindly switch to another device and try installing the Navi application.
If you are satisfied with my assistance and find this information useful, please spare a few minutes to rate your overall satisfaction level on the scale of 1 to 5.
Thanks & Regards,
Team Navi Finserv Limited