proxy not working

[mgelecomnet]

Hi I installed this program on Ubuntu and according to your description, I changed the path of sending requests to the server. But the connection to the main server is not established. It means that the requests of the Android application are received but not sent to the server. The proxy server is connected to the Internet and I can call API test from the browser. Android application requests are not sent to the Internet. How do I solve this problem? Thanks Mohammad