Unable to resolve host... #3224

Hello.
I rented a virtual server with Shadowsocks. The following settings are set in /etc/shadowsocks-libev/config.json:
"mode":"tcp_and_udp",
"server_port":8388,
"local_port":1080,
"timeout":86400,
"method":"chacha20-ietf-poly1305"

Shadowsocks-libev is also installed on the Linux client computer. The same settings are specified. The connection works correctly, websites open on the computer, and the IP address is correctly detected in services. The same IP address, port, password, and encryption method are set in the Shadowsocks 5.3.4 app on my

Android smartphone, but the connection is not working. When testing the connection on the Android device by tapping the gray area at the bottom of the app screen, next to the power button, the error "Internet connection failed: Unable to resolve host cp.cloudflare.com..." appears. Please advise what can be done to make the connection work on the smartphone?