Change WordPress Language as a Whole ?

Hi
Could you specify the language?

i am making a multi language site English/Arabic
i already made Different Css for Each Language using Selectors
Also Different Posts For Each Language using normal plugin features
Switching Output In Templates Based on Language using $currentlang

However i Need the Post Metadata , “this post was written by” ,”logged in as ” , Date And Time ,logout Links etc
to be also switchable English/Arabic ,
And that happens When changing the whole language of the Site
in Uni Language sites From the General Settings of WordPress

Could you provide a screenshot of your languages in Settings > Languages > Languages tab?
You can upload it via https://snag.gy and link to it here.

Sorry didn’t post it right
here is the link

https://s15.postimg.org/hdlxzo0rf/screencapture_wp_admin_options_general_php_14528.png

I need the “Language” tab, thanks.

I figured it Out actually ??
It is a kind of a silly mistake

i had to choose first both languages English/Arabic in WordPress General Settings
at Least once To be Marked as “Installed” and Not marked as “Available”

once Done All Strings in Both WordPress Languages will appear Normally
, and the plugin Works as Perfect AS it Could Be ??

thx alot Chrystl for your help & Support

thx alot Chrystl for your help & Support

I will Mark the Post As Resolved