Empty Cache directory

Hi Guys,

the plugin could be a game changer for me, but it doesn’t work yet on my page. I use WP 4.9.8 with the Bridge Theme from Themeforest. The only photo related plugin except “Adaptive Images for WordPress” is “Optimus”, but responsive image doesn’work, if I deactivate Optimus, too.

Everything looks good in the Backend, but the folder /html/wordpress/wp-content/cache/adaptive-images is empty by checking it with FTP.

Do you have any ideas to solve my problem?

All the best from Germany
Michael

===
Debug Info

? PHP GD library is installed.

? Image cache directory has been created.

/html/wordpress/wp-content/cache/adaptive-images => drwxr-xr-x

? Installation .htaccess file is setup OK.

/html/wordpress/.htaccess => -rw-rw-r–

? Adaptive images settings dump:

array(14) {
[“resolutions”]=>
array(3) {
[0]=>
int(1024)
[1]=>
int(640)
[2]=>
int(480)
}
[“landscape”]=>
bool(true)
[“hidpi”]=>
bool(true)
[“cache-directory”]=>
string(21) “cache/adaptive-images”
[“watched-directories”]=>
array(2) {
[0]=>
string(18) “wp-content/uploads”
[1]=>
string(17) “wp-content/themes”
}
[“jpeg-quality”]=>
int(65)
[“watch-cache”]=>
bool(true)
[“browser-cache”]=>
float(0)
[“cdn-support”]=>
bool(false)
[“sharpen-images”]=>
bool(false)
[“version”]=>
string(6) “0.6.64”
[“sanitized”]=>
bool(true)
[“wp-content-dir”]=>
string(26) “/html/wordpress/wp-content”
[“wp-content-url”]=>
string(32) “https://analogpoet.de/wp-content”
}

The page I need help with: [log in to see the link]