Connecting to blynk-cloud port 80

I’m using Arduino UNO with sim900 “Gboard 1.0”
Blynk server
The last Blynk Library release and Arduino 1.8.6 IDE
I’m using an example code to push data the serial monitor every time i run the code gives me different response som times can’t initialize some times can’t find sim card other time connection to gprs faild and most of times it continues giving me connecting to blynk-cloud port 80
It hasn’t connected any time by the code
When i use terminal and connect to blynk-cloud manually using AT commands it always connect
I’m using 115200 buad rate and when i change it it can’t initialize
If any one can help me to find this problem and solve it ?

void loop()