Login message: "Forbidden. You do not have permission to access this server"

Hi, would be grateful for your help.


One member, who is actually an admin, his seen this message twice now when logging into our forum:


"Forbidden. You do not have permission to access /index.php on this server"


The following day, the member got the same message but with our forum address, http://cachewalker.createaforum.com/index.php, instead of '/index.php.'


Is there anything we can do to fix this, or is it an error on your end?


Thanks in advance for your help 

Made a change let me know if it helps

Thank you support


Will let you know if it happens again.