Gunicorn increase timeout doesnt takes effect

I have a minimal flask api deployed on digital ocean wich trhows this error when i do a large request:

[1] [CRITICAL] WORKER TIMEOUT (pid:16)

I tried:

/env/Lib/site-packages/gunicorn-config.py (0 is unlimited,but i tried 500 etc)

class Timeout(Setting):
    name = "timeout"
    section = "Worker Processes"
    cli = ["-t", "--timeout"]
    meta = "INT"
    validator = validate_pos_int
    type = int
    default = 0
    desc = """\

gunicorn_config.py

bind = "0.0.0.0:8080"
workers = 2
timeout = 300

Procfile

web: gunicorn app:app --timeout 300

But i get the same error on the digital ocean console,and on the browser frontend i get the 504 error after about 30 secs wich means im not overwriting the 30 seconds gunicorn default. Smaller/faster requests they work good.

Any idea what can be the issue? Thanks so much!