If you encounter the problem of pixivfanbox payment failure, you can go to the official help page to directly find the problems you encounter, most of which are there. Don't be embarrassed just because it's all in English. The official has traditional Chinese. It's not patreon and paypal. It seems that the payment failed because of the settlement period at the beginning of the month and the end of the month. On June 30th1-June 4th, I tried to pay until June 5th.

Basically, you just need to get a bank card with the logo of visa or master card issuer. Credit cards may be better than savings cards. If you can't get a credit card for some reason, a savings card or a zero-line credit card (quasi-credit card) is your best choice. First understand the payment rules of the issuing bank, (first freeze certain funds and pay them to the other party at a certain time) to buy enough foreign currency or recharge enough RMB, and automatically purchase foreign exchange during the payment process. And try to avoid the beginning of the month and the end of the month (29-4) for payment. If the payment fails, please check whether the cross-border payment function is not turned on.