Hello there,

I apologize for the late reply, we have been getting a lot of messages daily and are trying our best to keep up with every request. I hope you can understand.

1- Theme labels can be changed or translated to your language with poedit software which is native wordpress way - following guide may be helpful http://code.tutsplus.com/tutorials/translating-your-theme--wp-25014 (read from point 3) or any other plugin for translation such as Loco translate plugin https://wordpress.org/plugins/loco-translate/ and here is beginners guide https://localise.biz/wordpress/plugin/beginners

2- Here are some general tips for speeding up your website:

a. Consider optimizing your images with some tool like this one:
www.jpegmini.com

b.  Also you can install some plugin for cache, like WP Fastest Cache or some other:
https://wordpress.org/plugins/wp-fastest-cache/
https://wordpress.org/plugins/wp-super-cache/
https://wordpress.org/plugins/w3-total-cache/
c. Enable gzip compression on your server. You can read more about it here:
http://www.feedthebot.com/pagespeed/enable-compression.html

But it comes down to pasting this code to .htaccess file located in your folder:

mod_gzip_on Yes
mod_gzip_dechunk Yes
mod_gzip_item_include file .(html?|txt|css|js|php|pl)$
mod_gzip_item_include handler ^cgi-script$
mod_gzip_item_include mime ^text/.*
mod_gzip_item_include mime ^application/x-javascript.*
mod_gzip_item_exclude mime ^image/.*
mod_gzip_item_exclude rspheader ^Content-Encoding:.*gzip.*

d. Also check - Leverage browser caching:
http://www.feedthebot.com/pagespeed/leverage-browser-caching.html

e. Use at least PHP 5.6.x or greater in order to process PHP code faster.

3- If the first method from this answer does not work with these labels you can change these in the code by navigating to wp-contentpluginsacademist-lmspost-typescourseshortcodescourse-list emplatespartsstudents.php and ratings.php

Hope this helps if there is anything else that we can help you with please don't hesitate to ask.

Kind regards,

Sean