My father's pinnacle card is visible on indus mobile app.
Also, add on also got generated.
As soon as the card arrives, I will request priority pass too.
Just checked, My father also got this free upgrade offer. Took all the screenshots while applying for the upgrade, it clearly mentioned joining fee - LifeTime Free and Annual Fee - LifeTime Free. Will receive the card in 8-10 days.
Finally, after trying from the last 3 months, they agreed for LTF Legend from LTF Platinum.
Thanks @skvignesh for all your guidance, the card is now showing on Indus mobile application.