After long search I have no luck to slove my problem as every time I use cronjob to auto publish my article to my Facebook page
The Cron Job HTML Output always replace Arabic characters by ?????????????????
I contact support and finally they told me to check my mbstring if its set to accept HTML output as an UTF-8,
The only solution to fix this is to be sure your mbstring in php cli set to accept cron job as UTF-8 [NOT CPANLE PHP.INI MBSTRING SETTING] this should be through command line and this issue directly related to server setup, not C-panel nor AutoTweet NG Pro application.
The great support give me other solution I love to share with you
1-Download the attached file.
2- Upload to your Joomla root.
3- Test you uploaded file by open this URL: http://www.YOUR-DOMAIN/JOOMLA-ROOT/cron-fix.php
4- in your Cron Job you need to schedule this command "wget
5- In Joomla control panel Open Components/AutoTweet NG Pro/Options/Advanced settings.
6- Go to: DISABLE/CHANGE JOOMLA ROUTING/SEF URLs
7- Enable URL routing = No
For me finally I have Cron Job working fine and this reduce my server load with 60% at least.
This is the same reason to share this information as I do belive this company deserve our support as they did an great solution.