Paytm is under RBI scrutiny for lapses in its IT systems and have been stopped to add new wallets. Best is to use conventional banks Credit/Debit cards. For UPI, bharatpay or the bank apps offers payment directly scanning the QR code. Hence I dont see a reason why a 3rd party app like Paytm is actually needed.
I never even heard of Paytm card to be honest. I would highly recommend skylight one (maybe first check their reviews here - https://skylight-one.pissedcоnsumer.com/review.html and see if you are interested). I found their customer service to be very friendly and helpful which is important in this case, right? Hope it helps. Have a nice evening everyone.