Ok,
After the re-install,
I generated new salts,
created a completely new administrator user,
cleared all browser caches,
logged in with the new admin
created a new page
And I still get the same error!
I repeated the test also in another browser, but also with the same error.
I did not block any country, and yes the login page http://fotospecialist.be/admin is perfectly accessible.
The admin and ftp credentials of themex are also working properly.
But remember you need to add the ip to your host file because the site is not publicly accessible.
Unitl now, with each reply from themex, I have followed each step one by one.
We are not making progress and the issue is still not resolved.
Note : I als updated the Cornerstone plugin.
Important: WHEN I DEACTIVATE CORNERSTONE, THE ERROR DOES NOT OCCUR
Please, in stead telling me what to test next, I suggest you people try to solve this.
It’s been 14 days since I notified the problem!
Regards,
Kurt