Unable to checkout course using PyCharm Edu

I have been using PyCharm Edu to do the "Py CheckiO" course. I solve tasks in IDE and use check feature from IDE to verify my solutions. PyCharm Edu plugin does all the things and update course materials including adding new stations and missions. For last 2-3 days I was facing issue with task check and course was not updating properly. So, I closed the course and check it out again using IDE. But I can't and constantly getting SocketTimeoutExpection.

I have attached a screenshot of the issue. Please check. I came to know from forum that checkio has been updating servers and DNS. Is that causing the issue?

Can anyone help. Thanks