Hello,
Using Zenphoto 1.6a.
Contact form does not work for simple visitors.
It does work if you are logged in.
A simple visitor : sending the email reloads the contact form (empty)
or
if rgpd is disabled, a pink message says "Please write a message, thanks". Of course, I type a message....
Registered user : sending the email displays the confirmation message; I do receive those emails.
I did try several options using the admin contact extension page options.
I cannot find what is wrong.