Support System Not Displaying Tickets?

I am looking to do some custom stuffs over the top / along side your support system.

I dont think I changed any of your plugin code, but the my tickets area stopped working.

Any idea why this is? I have reinstalled a copy of the latest greatest from your site but the issue remains?

Going forward, if I want to update a template, can I do so in a child theme file copy?

Support Access has been enabled.

Thanks!