ESP8266 - to big command?


I'm trying to connect to my University Wi-fi, where i have to post my login and password. To do this i need to send quite big POST method with some headers.


The problem is that i'm receiving corrupted data: |500x222

You can see that i've tried to cut data into some parts, but it doesnt helping. My firmware version is 18000902. I also tried to lower baud rate to lowest 9600, but still - with no effect. In the past i was connecting to other sites and it worked normally with shorter commands :/

Thank you for your help :)