Hi Calin,
I solved the issue on my side by disabling one line in the htaccess file inside the wp-content directory. The line updated is for the SiteGround Security Plugin – Hardening. I am unsure about the drawbacks of disabling this “Require all denied” command, and I am concerned about exposing my site to reducing security to make TagDiv Composer WP-Editor. What is your recommendation here?

BTW: These are the related lines in my htaccess file in wp-content.

# SGS Directory Hardening
<FilesMatch “\.(?i:php)$”>
<IfModule !mod_authz_core.c>
Order allow,deny
Deny from all
</IfModule>
<IfModule mod_authz_core.c>
# Require all denied
</IfModule>
</FilesMatch>

# SGS Directory Hardening END