As the thread title says. Paytm has stopped supporting amex lately and I need to recharge my airtel data card. Airtel's own website doesn't support amex, and all portals I come across support only visa/MasterCard.
i am assuming that the payment gateway that they used stopped supporting amex --by the way if you need to recharge something in emergency, i can transfer you funds on Paytm wallet (i imagine they have something like a gift card).
I am not sure the gateway can decide on the fly to drop Amex as that would seriously affect the SLA's . Paytm would have been informed in advance of the gateway's business or otherwise decision to drop Amex & then they would have taken the business decision to continue with the gateway or get someone who supports Amex. So that in turn would be a business decision for them.