Why can't the mobile phone number of other provinces log in to Sichuan Tianfu Tong?

Because the traffic of Sichuan Tianfu health link is too large, the traffic of mobile phone numbers in other provinces is small, and it is difficult to log in. Tianfutong is a comprehensive municipal transportation platform built by Chengdu Tianfutong Financial Services Co., Ltd., which undertakes all the business of Chengdu City Card Co., Ltd., and undertakes the development, construction, operation and management of financial IC card multi-application platform, "City Card" and public payment management service platform.