Cloudflare error 520

Hi guys,
From topic title i know that maybe this is not the right place for my problem, and maybe members of wordpress will not answer me but i just wont to share my problem with you, and see other experiences, and maybe getting a resolve. I have install free version of cloudflare to my website, with wordpress plugin and i have changed name servers of my webhosting to cloudflare’s name servers. But its been a while now (2 weeks) that my front page says Error 520 and i know its cause of cloud flare. I need option of cloud flare because we all know benefits of cloudflare. I live in europe and traffic from europe to america is a bit long. Cloudflare did cut this way and my visitors from europe are able to access much faster my webpage, but now no longer more, i dont know where the issue is ??

thanks for your time