I really have enjoyed these courses and learning the different languages. I’m currently learning the new Responsive Web Design (in Safari), but my progress hasn’t saved multiple times. It keeps going back to the 13th task for the first challenge. It happened once when I reached around the 30th task and so I repeated those tasks while going back to the curriculum each time I did one thing to make sure it updated the progress. I got I think the 54th task when I closed my computer for the night and when I come back today it was back to the 13th again. Could someone help me with the issue? Is anyone else having the same problem?