Select "Local Login", enter admin, password 123456, and click Login. When you use it for the first time, you need to enter the information of the first enterprise, enter the tax number, name and administrative division, and then click OK. The system will prompt "The enterprise has been added successfully. Do you want to continue adding?" Select "Yes" to continue filling in the enterprise. When you want to switch enterprises, just click the "Switch Enterprise" icon in the upper right corner to open the "Select Company" box, select an enterprise, and click OK to switch to another enterprise with one click. If it still fails, it may be a network problem. You can try again with a good network.