Taobao's illegal request for signature may be due to Taobao itself or a network failure. At present, there is no unified statement, which can be solved by general refresh. If not, please perform the following methods.

First, log in again after exiting and pay again;

Second, if the re-payment is unsuccessful, try to reinstall the Taobao client after uninstalling;

Third, the above methods are tried and tested, please contact customer service.