What is the reason for Alipay to open an electronic invoice and send a text message?

Because the mobile phone is not bound to the information unit that sends the electronic invoice.

1. Open Alipay, enter the home page, and click the "All" option. 2. Click to expand all functions of Alipay, enter the following page and find the "Invoice Manager" option. 3. Enter the invoice manager applet and click the "Charge" function on the home page. 4. Select the relevant date of bill invoicing, view the order, and click "De-invoicing" in the order list.