Security check not working


I’ve been using website for over a month, but now since a few hours it doesn’t let me enter their page. As always, it shows me the “security check” page, but instead of an English version it shows me translated Ukrainian page (I’m from Ukraine) and instead of few seconds of waiting, it doesn’t finish (I’m not sure it even starts) my security check for hours. Again, everything was fine until few hours ago.

I’ve already tried reaching this page via PC and Android, on Google Chrome and Mozilla Firefox, clearing cache and cookies, via Incognito mode, and I still can’t reach the website. I need to enter it and vote for a server in 12 hours, or my progress will be lost.

How can I fix this situation?