No courses in all courses in first attempt

Please create topics in appropriate sub-forum. Moving topic to "Other issues" forum.

Please make sure that your wplms theme and all its plugins are updated to latest. Also check this after deactivating the third party plugins and clearing the browser cache .

Please make sure that the extended profiles , account settings and activity stream components are enabled from wp-admin -> settings -> buddypress .

In case the issue is still not resolved it would be great if you can share the site credentials. The screenshot shows some issue but we're unable to replicate it on our setups, which means it could be a settings issue as well. Also try the following : a. Clear browser cache and check again.  

Can you please share your site url also to login and check ?

I was unable to replicate any issue with the all-courses page . check : https://screencast-o-matic.com/watch/cDVv2shsz1 About the previous unit not accessible issue . Please note that you need to set unit locking -> "mark previous unit complete" from wplms -> course manager so that users cannot mark complete the units randomly . When user have marked unit complete randomly and not in a sequence then this issue may arise . Can you share the credentials of the student and url of the course to check this ? Ps : mark reply as private while sharing credentials .