Airtel — unable to recharge under prepaid after converting from postpaid

Address: 500008

So, i've converted my airtel number from postpaid to prepaid one week ago. The postpaid services got cut off 4 days ago. And i haven't been able to recharge my phone since then. I;m facing issues like:

1. Failed recharge
2. Airtel app error: something went wrong while processing request.

I'm able to recharge for other numbers of my family members using the same app but it wouldn't let me recharge mine. Please, fix this issue asap i am in dire need of balance in my phone.