Hi Dave,
We'll need the account for the website. You can link your forum account to your hosting account by following the instructions after logging into the account panel and selecting "Get support"
https://x10hosting.com/sso/login
This is most likely due to the fact that we don't use Apache. We use Litespeed, which is a drop-in replacement for Apache, but is not exactly the same. Specifically, I don't think it allows for the use of SetEnvIf/variables.
Well your mysql user is wrong. So there's that.
You have to use a mysql user that's been added to the database in cpanel.
https://x10hosting.com/wiki/How_to_Create_a_MySQL_Database_and_User
Can you please PM or email me with an administrator login for your forums? (you can create one just for me and delete it when it's done).
I need to check something, but I need to do it in real time.