how to add arabic language support to flexmonster

Hello, 
 
Thank you for posting your question here and for providing a screenshot for illustration.
 
It seems the reason for the question marks is that UTF-8 is not being recognized properly and such issue is not connected with Flexmonster. 
 
Here is a more detailed explanation along with possible solutions to the issue you have encountered: https://stackoverflow.com/questions/279170/utf-8-all-the-way-through?noredirect=1&lq=1
 
Please let us know if this helps to solve the problem.
 
We are looking forward to hearing from you.
 
Best Regards,
Vera