This has nothing to do with entropay. If your account is blacklisted then no card be it a credit card/debit card will work. Simply put you can't buy anything from origin itself (Besides EA Cash Cards in USA) no matter what payment method you use. On the other hand if your account is not blacklisted then most payment methods will work including entropay. If you can somehow parse the URL after you finish order then you may see this url meaning your account is blacklisted:so this means someone misused entropay at Origin so they blacklisted them completely
https://www.origin.com/en-in/store/...ACCOUNT_STATUS&errorCode=4014&auto-login=true