I can not see the file Config.php

Hello everyone

I am using Cloudflare 2 years ago, but when I try to see the file: Config.php in cpanel of my hosting, It says I am blocked, my hosting told me it is a problem of Cloudflare and I don’t why it happent if I don’t have changed anything in Cloudflare.
I have also noticed that my website is having few visitors and and my adsense earnings decreased and I don’t know why, I have not changed any settings in Cloudflare for months.

Someone can help me, please?