The reason is obvious,
lots of people just got excited for the rise in bitcoin price, so suddenly an enormous number of people just bought crypto by creditcards hope to pay back after a certain amount of profit, but they faced a big fall back, a 50-day downtrend, so the bank is banning crypto purchase by cc to avoid lots of unpaid debts
thats logical and not really a big deal
That was my thoughts. When using a credit card, one isn't really using their money. It is the bank's money and they don't want to touch it. Right now, my checking account is connected to Coinbase. I have established a consistent relationship with my bank and Coinbase. I'm using my money not the bank's money. I'm just storing my money in my bank then sending some of it over to Cryptocurrencies to Coinbase. (At least with the United States) unsure what other countries are doing.