Blocks are mostly for new cards only. Nothing for old cards. New cards are blocked after 100rs transaction only 😅.
I have 3 cards - 7 month old eterna, which didn't face any issues. 2.5 months old hpcl, which got blocked after 100rs transaction, but started working again this month. And 1 month old snapdeal card, which again got blocked after 100rs transaction, and will be mostly unblocked by June.