[Python] Selenium + 2Captcha Proxy Not Working for Website

I’m trying to use a paid 2Captcha proxy with Selenium to access Finland insurance site. The proxy works with requests.get(), but when I try to access the website using Selenium, it fails.

I’ve verified the proxy manually, and it works. I’ve tried adding --proxy-server to ChromeOptions. No clear error messages appear, the page just doesn’t load.

What am I missing?

Here is what I get when the page opens (sorry it is in Croatian):



Here’s a minimal reproducible example of the code:

import requests
from selenium import webdriver
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
import time

# Proxy credentials
USERNAME = "your_username"
PASSWORD = "your_password"
PROXY_DNS = "your_proxy_iport"


def test_proxy():
"""Test if the proxy is working."""
proxy_url = f"http://{USERNAME}:{PASSWORD}@{PROXY_DNS}"
proxies = {"http": proxy_url, "https": proxy_url}

try:
response = requests.get("http://ip-api.com/json", proxies=proxies, timeout=10)
print("Proxy Response:", response.json())
except requests.RequestException as e:
print("Proxy failed:", e)


def setup_driver():
"""Setup Selenium WebDriver with proxy."""
chrome_options = webdriver.ChromeOptions()
proxy = f"http://{USERNAME}:{PASSWORD}@{PROXY_DNS}"
chrome_options.add_argument(f"--proxy-server={proxy}")

driver = webdriver.Chrome(options=chrome_options)
return driver


def test_website():
"""Test if Selenium can access the website."""
driver = setup_driver()
driver.get("https://www.if.fi/henkiloasiakkaat/vakuutukset/autovakuutus")

try:
WebDriverWait(driver, 10).until(
EC.presence_of_element_located((By.TAG_NAME, "body"))
)
time.sleep(10)
print("Page loaded successfully.")
except:
print("Failed to load the page.")

driver.quit()


if __name__ == "__main__":
test_proxy() # Check if proxy works via requests
test_website() # Check if proxy works with Selenium

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