I have rebooted my iPad and continue to get this message. I have tried refreshing the lesson (from the menu on the upper right) only to again receive the below message.
Since I am posting this message from my iPad, we know it is not an issue with my internet conection.
It’s not just you, I started having the same problem about half an hour ago on iPhone
I’ve just checked and it’s working for me now. But I can say that in the previous days I’ve had multiple times difficulties to open various lessons. It was telling me that the connection was too slow and to go offline. But it wasn’t! And after a while waiting the lessons opened!
Should be all back to normal now, we were running a quick update.
Yep, working again. Thank you.