Yes, we can use paytm UPI with Paytm Bank.
transfer some amounts in paytm bank like 500,1000 and do these chillar upi transactions,
agar kuch issue hua tou app v paytm ka aur bank v paytm ka (Paytm Bank- humaari abhi koi physical branch nahi hai to saara saamadhaan online hi karte hai). 😉