Can’t translate one words from Amelia plugin

Hi folks,
I’ve found a translated .po file for Amelia plugin, but also found the problem with the translation of a word “service” (and a few other words) though it’s indicated in .po file and is translated there, but it doesn’t work. I also tried to look for this word in the active theme and Woocommerce but didn’t found anything related to this separate word.

Here’s a screenshot of the plugin’s booking view with this word:
Screenshot

I’m not good in PHP but found this file containing this word and also a few other untranslatable words, so my question is if this file is to blame for the ‘wrong’ type of output for those words that can not be translated or if there’s some other reason for this problem?

Thanks for your help,
Cheers

<?php
/**
 * @copyright ? TMS-Plugins. All rights reserved.
 * @licence   See LICENCE.md for license details.
 */

?>

<script>
  var hasBookingShortcode = (typeof hasBookingShortcode === 'undefined') ? false : true
  var bookingEntitiesIds = (typeof bookingEntitiesIds === 'undefined') ? [] : bookingEntitiesIds
  bookingEntitiesIds.push(
    {
      'counter': '<?php echo $atts['counter']; ?>',
      'category': '<?php echo $atts['category']; ?>',
      'service': '<?php echo $atts['service']; ?>',
      'employee': '<?php echo $atts['employee']; ?>',
      'location': '<?php echo $atts['location']; ?>'
    }
  )
</script>

<div id="amelia-app-booking<?php echo $atts['counter']; ?>" class="amelia-booking amelia-frontend amelia-app-booking">
  <booking id="amelia-step-booking<?php echo $atts['counter']; ?>"></booking>
</div>