Is this a bug?

Question

I get a connection error message =>

"Please check your internet connection and try again."

Even though my internet speed is good!

I switched to 4G but unfortunately it still gives me the same error message, what is the problem?

Answer 1

Many users reported problems with the app... For me it seems to work now.
https://www.sololearn.com/post/1406784/?ref=app

Answer 2

Had this problem yesterday, now it work fine.
Probably thay had some problem with server.

Answer 3

A lot of users seem to have the same problem as well.