Having difficulty learning new words

I had finished learning a set of new words in level 2 but when I clicked on the “learn” button, it would still get back to the same set of words.

Thanks!

There was an issue where the site and the apps were down earlier,
but a solution is being worked out. This is the link to the most
complete information provided by the staff: Memrise website and apps are down [ Edit: Fixed! ] There should also a banner at the top of yours courses saying something to the same effect.