hi,
I would suggest you to follow the following and check if it works??
- Please deactivate all installed 3rd party plugins.
- Delete browsers cache especially cache plugin.
- Re-save permalinks.
deactivate everything other than wplms defaults then check if it works.
if it does not work then let me know I will check the issue. if it's possible then please provide video that on which course/quiz/question you are using for testing by which i can replicate the same.
Note: theme and plugins should be updated to its latest version.