issue with arabic text

Hello,
suddenly i got my wordpress site arabic text not readable letters

everything was fine before but now arabic text going wrong

any idea how to change letters coding ?

here is my site https://www.freelanceppl.com
and here is example
https://freelanceppl.com/jobs/%D0%B8%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82-%D0%BA%D0%BB%D0%B0%D1%81%D1%81%D1%8B-%D0%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5/%D8%AF%D9%88%D8%B1%D8%A9-%D8%AA%D8%B5%D9%85%D9%8A%D9%85-%D9%85%D9%88%D8%A7%D9%82%D8%B9-%D8%A7%D9%84%D8%A7%D9%86%D8%AA%D8%B1%D9%86%D8%AA/

arabic is showing as :
Job Description

ù?ù??ˉù… ù?ù?ù… ?ˉù??±?? ?a?μù…ù?ù… ù…ù??§ù??1 ?§ù??§ù??a?±ù??a ?¨?§ù?ù??±?ˉ ?¨?±ù??3 ?¨?-ù??? ?￡ù? ??ù…ù? ?§ù??3?§?1?? ?§ù?ù??§?-?ˉ?? 15 ?ˉù?ù??§?±
?3?a?aù…ù?ù? .ù…ù? ??ù??§ù? ù??°ù? ?§ù??ˉù??±?? ?§ù??′?§?? ù…ù?ù??1 ?′???μù? ù??a???§?±ù? ù?ù…?a???± ?§ù?ù??a?±ù?ù?ù? ù?ù…ù?ù??1 ?§???¨?§?±ù?
ù??aù… ?§ù??a?ˉ?±ù??3 ?1?¨?± ?3ù??§ù??¨ ù??¨?±ù??§ù…?? ?aù?ù… ù?ù?ù??± ?1?¨?± ?§ù??§ù??a?±ù??a

Regards