Hello Doug,
First very sorry for delay,
It was fixed now,
It was a problem in WP installation. There are two methods to install WP in a subdirectory. Read here:
https://codex.wordpress.org/Giving_WordPress_Its_Own_Directory
HMWP usually works well with both of them but as it doesn’t access to htaccess it couldn’t make it work. I think there was a small bug in one of your htaccess files, too.
Anyway, I changed your setup to go with first method which is easier. Then manually configured HMWP.
Regarding writable htaccess, it’s probably caused by suexec which is a more strict version of PHP, read more:
https://codex.wordpress.org/Changing_File_Permissions
Please note as long as htaccess is not writable you need to manually configure HMWP after changing its settings, activating new theme (and installing new plugin if you enabled renamed plugin folders feature)
To configure HMWP manually go here: HMWP > General Settings> Customized htaccess > Manual Configuration. The same result can be achieved by going to Permalink page from WP settings.
Sorry again for any inconvenience,
Hassan
