All above strings cannot be translated in String Translations.
I'm not paying the support fee to try everyting suggested. Please help to give direct instructions to translate them if your plugin can do the translation. If not, just confirm me that the text in my screen captures cannot be translated. We need direct answers from your support. Thx.
Thank you for the access, I was able to check and I've noticed that there are some strings not translated (you might need to switch to the second page of the strings table when searching for a string or change the number of strings that show in the table).
By default, the table is set to show 10 strings, you can change that on the right-bottom of the table where it says "Strings per page:"
I've done a check for two of the strings (Retake, Passed) you were having issues and as you can see on the attached images they are not translated, please translate them and check if the issue persists. (I've found both strings on the second page of the table).
Let us know if that works or if you need further questions.
Thank you for your direct feedback. That makes works easier and I translated some of the text. However, some below text was still unable to translate. Please let me know what should I do.
01.png
The three footer text.
02.png
The text "Certificate" in below screen. hidden link
03.png
The text "Show more sections" in below screen. hidden link
04.png
The text "Lecture" in below screen. hidden link
05.png
The text "Show More Items".
06.png
The text "All Courses" and "Latest Courses" in the side bar.
* As for the question related to the credits you have on your WPML account, you can use them but in your case, the strings seem translated in WPML String Translation and it might be the issue shown in the errata we shared with you.
* Please try clearing the cache of your website(server-side included) and check if the issue persists.
* Note: Please make sure you have a full backup of your website before making any updates/changes to your website.