Actually we need to raise it here and also take it up with HDFC buddy. Not just HDFC even other payment apps crash. Which means Samsung has changed something where payment apps aren't working. As for HDFC bank app, it was crashing for me in One UI 5.1 itself. I had been using only their sites for payment for > 6 months.
Long story short Samsung -> Please check the payments framework
HDFC -> Their app really **bleep** in every Android device. Please do something about your app.
