I have reset your DB info, your site now loads for me. Can you confirm?
Try resetting your password via http://x10hosting.com/control, it should fix your PMA issue.
Fris' cert should be fixed later this week.
It sounds like you are being blocked by the firewall. Next time it happens can you try to ping stoli.x10hosting.com and see if you're able to get a ping through?
I reset your permissions to 755... you may have to change them on some files specifically the configuration files. Right now I'm refreshing your page every few mins to make sure it continues to load properly.
I reassigned your DB user and no longer see that message. Instead I see this:
The page you are looking for is temporarily unavailable.
Please try again later.
What is supposed to be displayed?
I have reset your cPanel password and PM'd it to you.
I also created a DB user, assigned it to your wordpress DB and updated your wordpress config file. You should always use DB users and not your cPanel information for the connection details.
Horde is just an interface to the backend email, it should not affect your actual Emails just the access to them.
Can you PM me login details to an Email account you're using?