Why can't E Bao issue an invoice?

Why can't e-Bao issue an invoice? It's because the internet speed is too slow. E-Rent Bao is a platform for collecting and remitting electricity charges on the whole netcom Internet under the State Grid Corporation of China, which requires a high network speed, with the lowest network speed of 10MB/s. If it is used in an environment below10mb/s, it will not be able to make an invoice, and it can be solved by changing a good network environment.