Is there any problem with the website files.000webhost.com? I can´t access it.
Hello. Please clear browser cache and try again 
Hello. I´ve cleared cache as suggested but still can´t access the website. 
Also I can´t access my files via FileZilla.
Try using a proxy or VPN to see if this resolves it?
If it does then it would appear some sort of ISP blockage possibly.