Is the Tor Link DarkMX optionally adds for Web Access, active and working if that is chosen?

In the Home - edit feature, it appears the DarkMX owner has the option of obtaining and using a Tor Onion address for Web Access. Selecting that option and then attempting to use the Tor Browser to connect via the DarkMX supplied xxxxxxxxxxxxx.onion link back to it, appears to fail.

Click the edit button on the home page.
Go to Web access.
(I'll assume you have turned web access on)
Select users. A window will pop up. Press 'add' button. Now you can add who you want to be able to see you through web access.