Memory Game

1. Detailed steps to reproduce the bug (exactly how and when did it happen)
2. Platform and version number. E.g. Drupal, Wordpress, Moodle. -- Wordpress V 5.4.2
3. Mobile or Desktop. -- Both
4. Browser: Chrome, Firefox, Safari etc. -- Chrome, Firefox
5. H5P plugin version -- H5P V 1.15.0
6. H5P content type and version (if a content type was used), and a sample URL or attached H5P.
7. Any browser console errors. -- None
8. Any PHP errors.

Hi, I´m a teacher from a brazilian basic school, and I´ve created a memory game with the photo and names from my 20 students. I´ve selected the random option, with 6 pairs of cards.  Instead of randomizing between the 20 pairs, it randons only with the same 6 pairs always (that the program selected). It has frustated the student that didn´t "pop up". Is it an error? How can I solve it? (sorry for my bad English). It happens when playing in my account in H5P.org, and also when students play in the Wordpress, with Chrome, Firefox, both in notebooks or cell phones.

RESOVED- My web hostting company had to make some changes.