So sieht meine htaccess aus. Ich vermute, daß an dem WP Cerber Eintrag alles liegt, das Plugin habe ich lange nicht mehr.
Sicher bin ich mir aber nicht, somit habe ich W3 Cache & Autooptimize abgestellt.
[INDENT]# BEGIN Enable Keep Alive Speed Optimization
<IfModule mod_headers.c>
Header set Connection keep-alive
</IfModule>
# END Enable Keep Alive Speed Optimization
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress
RewriteCond %{HTTP_HOST} ^engelfotografie\.com$ [NC]
RewriteRule ^(.*)$ http://www.engelfotografie.com/$1 [R=301,L]
RewriteCond %{SERVER_PORT} !^443$
RewriteRule (.*) https://%{HTTP_HOST}/$1 [L]
# BEGIN WP CERBER GROOVE
# Protection of admin scripts is enabled (CVE-2018-6389)
#<IfModule mod_rewrite.c>
#RewriteEngine On
#RewriteBase /
#RewriteCond %{REQUEST_URI} ^(.*)wp-admin/+load-scripts\.php$ [OR,NC]
#RewriteCond %{REQUEST_URI} ^(.*)wp-admin/+load-styles\.php$ [NC]
#RewriteCond %{HTTP_COOKIE} !cerber_groove_x_4DQYA9Xgn1Rzl7osjEMGIJaFh5=vlnqJIaQUSwr0iDmC3KOsLG2BHVcPtg
#RewriteRule (.*) - [R=403,L]
#</IfModule>
# END WP CERBER GROOVE[/INDENT]