Lloyds, along with US institutions including Bank of America and JP Morgan, are introducing restrictions on cryptocurrency purchases. Bankers say recent volatility of cryptocoins has made them too much of a gamble for credit card purchases. Bitcoin experienced what you might call panic buying at the end of 2017, with the value of BTC 1 getting very close to $20,000 just before Christmas. Its been mostly downhill since then with the price today somewhere around $8500, back to where it was in November 2017.”]
Source: https://nakedsecurity.sophos.com/2018/02/05/buying-bitcoin-on-your-credit-card-not-any-more/