Man, that's really annoying! I got it done only after my 6th attempt. I understand they need these measures to reduce spamming, but I don't think that's the best solution for this issue. Moreover, on my 4th or maybe 3rd attempt, the captcha test disappeared from my screen! That's awkward. I've never experienced something similar. I've checked some settings, and it seems you didn't add rotating proxies to your website. That's why it happens like that. You should use the services of proxycrawl.com/scraping-with-worldwide-backconnect-proxy. After that, your captcha tests are going to work well.