Farsi Persian or Arabic Writing in Photoshop

Hi all,

I am using Photoshop 2020 (21.2.2 Release), which is capable of writing with Arabic letters, but when I write it separates them as individual unreadable letters. 

Background info:

Previously I had Photoshop Middle East Version, which I could write Persian. All those files are with me; some of those when I open can accept and show new entries words but some of the other ones separates each letter. To redo all of them is like two years of work or more. Also there are files with both English and Persian.

If the persian writing is good, then the English words become rectangular boxes.

If the English writing is good, then the Persian words gets separated.

Please, if anyone knows how to set my Photoshop settings to be able to do this would help me a lot.

Many thanks

Kawa S.