Problem on a site with Memberpress plugin

Hi there!

I have been a Polylang user for many years and never had any problems with multilingual sites, but recently I have been working on a project for multilingual site that uses premium LMS membership plugin Memberpress and its addons MP Courses and MP Quizzes within DIVI Theme. I have setup many multilingual DIVI pages with no problem, but the problem I encountered is setting up MP Courses pages (LMS system).

So, I have setup Custom Post types within Polylang settings, so I am able to have a separate courses pages for Slovenian courses/webinars page (https://mil.casoris.si/spletna-ucilnica/ – SLO is primary language) and English courses/webinars page (https://mil.casoris.si/en/spletna-ucilnica/). I was able to translate a webinar to ENG along with the quiz as you can see here: https://mil.casoris.si/en/spletna-ucilnica/how-to-read-and-understand-the-news/ … Intro, Content and Conclusion of the webinar work just fine, but the Quiz and Questionnaire do not open correctly (404 page). Now, MP Quizzes addon works together with MP Courses, but for some reason the URL does not work and it does not open.

Now, if I change Polylang URL modifications setting to “The language is set from content” then Quiz works just fine, but my question is how I can make it work with the current option “The language is set from the directory name in pretty permalinks”? I wrote to Memberpress support but they were not able to help because they do not support Polylang and multilingual sites in general.

So, I was wondering if you could possibly help me with this issue that is causing me headaches? Everything else works just fine on the website https://mil.casoris.si/ as you can see for yourself.

Please let me know ASAP. Thanks!

The page I need help with: [log in to see the link]