So since I didn’t get any responses, I went ahead and continued with the courses.
It’s been stated that you don’t get any notifications for getting the achievements, but you do get them. Make sure you check your Achievements page.
Also make sure that as you’re going through the courses, you get checkmarks on all the sections and not the half filled-in circles:
As for the links not working, I had a similar issue. To me it looked like something was going on with page redirection and it kept trying to log me out. Long-story short, close all your browser windows except one, go into your settings, clear your cookies and cache (if you know how to do it for just the epic/unreal sites, that would be good, otherwise you’ll probably just have to clear you cookies and cache for all sites). Once you’ve done that, close that last browser, then start up your browser again, and see if you can visit the links. They work for me from the original blog post here: