https://www.learndash.com/ is not a familiar term on moodle.org. Did you search the web? A search in the English community https://moodle.org/mod/forum/search.php?search=Learndash&id=5 didn't bring anything useful. You are on your own, I am afraid.
Installing and upgrading help
Learndash to MOODLE migration
Αυτή η συζήτηση κλειδώθηκε κι έτσι δεν μπορείτε να απαντήσετε σε αυτή.