Hello,
I am trying to setup WPML on my site (www.zkdesign.com.tr)
I have PHP 7.2 running and my server meets all of the requirements. But still I can not terminate the setup and got the attached screenshot. Also, "+ add a new language switcher" buttons does not work (I am receiving blank pages).
Sometimes a 3rd party plugin or even a theme can cause such issues with the set up procedure.
if possible please test with a minimal environment and let me know your results
please test this:
-Back up your site first
-Deactivate all non WPML related plugins
-Switch for a moment to a WordPress default theme like Twenty Fourteen.
-If the issue is gone, activate one by one to see with wich one there is an interaction issue