I believe this question should be forwarded to your hosting company. And the way your Cron command looks is not good. It should also have a path to the PHP included. Did you follow the Cron setup manual?
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when i change command to: /usr/bin/php /home/******/www/moje-velenje.net/ow_cron/run.php
Invalid permissions can cause your cron jobs to fail in at least 3 ways: Jobs added as files in a /etc/cron. */ directory must be owned by root. Files owned by other users will be ignored and you may see a message similar to WRONG FILE OWNER in your syslog.