Why can't I open font-style 3/16 lessons?

Question

working with text get blocked

Answer 1

thank you for replying. I have completed that module... tried again but still doesn't work.

Answer 2

also it appears a new version of the app. I updated that and open it but I am unable to continue :(

Answer 3

You've not completed the 2/16 module.... check again

Answer 4

I have uninstalled the app... reinstall it and open the newer version. now it works!!! hooray :)))