I used their cards, too. It's annoying. App is not easy to use at all and has many functions. Without the function of querying all historical bills, you have to go through them month by month, without the function of querying history by stages, and without the function of clearing in advance. If you want to repay in advance, you must call the manual service. Search for these functions on the software, and immediately jump to the robot customer service, which does not provide services.