[تم الحل] Importing a .po file I created by Poedit as String Translation doesn't reflect to

Background of the issue:
I am working on a site under development and trying to import a .po file I created using Poedit into the WPML 'String Translation' screen. I specified my domain "smr" on 'Select what the strings are for' and submitted it.

Symptoms:
The translation strings don't appear (all strings are marked as "not translated") on the 'String Translation' screen even though I selected the domain as 'In domain:'. Also, the strings are not used on my website.

Questions:
Why don't the translated strings appear on the 'String Translation' screen after importing the .po file?
Is there a specific step I am missing when importing the .po file into WPML?