I will move adminer behind the firewall I will shortly setup, give me some time I just returned to Zencart after a very long absence, I started in 2007, that's more than 15 years ago.
I started another similar thread where I address more questions.
I appreciate very much your suggestions, please keep them going.
Lastly, I think folders should be set to 775 to get past the installer, thus making them writable for group.
Thanks again.