Image sizes not changing

Hi there,

I have installed your winderful plugin however it’s not working to full extent.

I can see that my images remain of the same size. Here is a test link – http://www.demin.ru/wp-content/uploads/2015/10/20151002212650.jpg?resolution=30,30

At the same time, I am quite confident that the plugin accepts incoming image requests as per rules in htaccess, as I am able to print debug info for NON-existing files like http://www.demin.ru/wp-content/uploads/2015/10/20151002212650-NONEXIST.jpg?debug=true

compare it with the link to a really existing file – http://www.demin.ru/wp-content/uploads/2015/10/20151002212650.jpg?debug=true

My settings are the following:
PHP GD library is installed.

✔ Image cache directory has been created.

/var/www/zn4067/data/www/demin.ru/wp-content/cache/adaptive-images => drwxr-xr-x

✔ Installation .htaccess file is setup OK.

/var/www/zn4067/data/www/demin.ru/.htaccess => -rw-r–r–

❖ Adaptive images settings dump:

array(12) {
  ["resolutions"]=>
  array(3) {
    [0]=>
    int(1024)
    [1]=>
    int(640)
    [2]=>
    int(480)
  }
  ["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(70)
  ["sharpen-images"]=>
  bool(true)
  ["watch-cache"]=>
  bool(true)
  ["browser-cache"]=>
  float(180)
  ["landscape"]=>
  bool(false)
  ["hidpi"]=>
  bool(false)
  ["cdn-support"]=>
  bool(false)
  ["version"]=>
  string(6) "0.6.41"
  ["sanitized"]=>
  bool(true)
}

Web Server
Apache/2.2.27 (CentOS)
Document Root
/var/www/zn4067/data/www/demin.ru
PHP
5.4.45
PHP Time Limit
180
PHP Memory Limit
256M
PHP Post Max Size
200M
PHP Upload Max Size
200M
PHP Max Input Vars
10000
PHP Display Errors
Yes
PHP Error Log
MySQL
5.5.46-log
MySQL Ext/mysqli
No
MySQL Table Prefix
te6d_
MySQL DB Charset
utf8
WP
4.3.1
WP Multisite
No
WP Debug Mode
No
WP Site url
http://www.demin.ru
WP WP Home url
http://www.demin.ru
WP Permalinks
/%postname%/
WP home path
/var/www/zn4067/data/www/demin.ru/
WP content dir
/var/www/zn4067/data/www/demin.ru/wp-content
WP plugin dir
/var/www/zn4067/data/www/demin.ru/wp-content/plugins
WP content url
http://www.demin.ru/wp-content
WP plugin url
http://www.demin.ru/wp-content/plugins
WP Locale
ru_RU
WP Memory Limit
40M
WP Max Upload Size
200mb
WP Active plugins
Adaptive Images for WordPress v.0.6.41 by Nevma
bbPress v.2.5.8 by Сообщество bbPress
BuddyPress v.2.3.4 by Сообщество BuddyPress
Force Regenerate Thumbnails v.2.0.5 by Pedro Elsner
Imsanity v.2.3.5 by Jason Hinkle
Ограничение попыток авторизации v.1.7.1 by Johan Eenfeldt
MailChimp for WordPress Lite v.2.3.17 by ibericode
Restrict User Access v.0.4 by Joachim Jensen, Intox Studio
Simple Lightbox v.2.5.2 by Archetyped
WP-Mail-SMTP v.0.9.5 by Callum Macdonald
WP MU plugins

=========
Would you please help!

https://ww.wp.xz.cn/plugins/adaptive-images/