Tata Motors — IRA app

We have purchased TATA nexon XZA+(p) in the month of August. IRA app subscription comes along with the above variant for an year. However though we could manage to register in IRA app with our credentials we are not successful in establishing the connection with our car through IRA app.An error message We have raised complaint with tata support (service center but no vail till date) Please expedite the issue at the earliest possible date. Else the very purpose of having IRA app is of no use for the customer. In a nutshell the purpose is defeated