I cannot practice and don't know why? We ask me to upgrade but when i tryed nothing work

Question

Need help to continued my lesson

Answer 1

Chris Ng ,

if there are any messages that appear that you can share with us? your description seems to be a bit vague.

Answer 2

I think you can continue with the lesson but can't try it yourself since sololearn has removed it for the new users.
Have a look at it:
https://www.sololearn.com/Discuss/2846858/why-can-t-i-run-the-string-without-being-told-to-register-for-the-pro-version