Reza-G

Hi dear John Thanks for your reply. The problem is I haven't this issue with previous host provider. I'm wondering it might be due to MySQL problems in new provider.

Hi everyone I've just installed a purchased 6.2 version of WHMCS, repeatedly! But when I went through installation step, I've got "404 error - page not found" in step 5! First, I thought that problem is the requirements. So next time, I double checked the requirements and everything was fine! I installed WHMCS in sub directory like "mydomain.com/cp" as clients portal, where "mydomain.com" is my main Wordpress website. Also, when I tried to open admin panel or client panel, I've got "Down for Maintenance (Err 2)". Can anyone suggest what the problem might be? Thanks