Clampdown on credit card usage?

Had a letter from my credit card issuer this morning informing me they no longer allow transactions with betting companies or digital currencies, not that I do now. The ban also includes transactions with betting companies for non-betting activities such as ordering a meal in a casino restaurant.
What surprised me is that they also now ban front-loading of credit cards, something mrs dutchman is very fond of doing before going on holiday (she's very good with money).
What surprised me is that they also now ban front-loading of credit cards, something mrs dutchman is very fond of doing before going on holiday (she's very good with money).