nikit3420881, Try updating the Mihome application, change different regions: China, Singapore, USA.
In the Instructions for Connection there are more options:
If the device is not connected:
• In the MI HOME settings, specify the "China" location;
• In the settings of your home Wi-Fi network, change the password on the alphanumeric tsiferny version (without special characters);
• In the DHCP settings of the router, set the static IP address for the gateway (MAC address can be found by connecting to the Wi-Fi gateway network);
• Try to connect from another phone or from another version of the application;
• Use third-party service provider, for example, to draft Wi-Fi from the phone;
• Allow the MI HOME application to determine the location.