Found another one.
Page 19:
Code:
Select the “Register System via smt.digitalairlines.com” menu or use the ALT+g keystroke
ALT+g keystroke is for the classical registration
Code:
Select the “Register System via smt.digitalairlines.com” menu or use the ALT+i keystroke
Page 20:
After "Select Trust and Import" (alt + t)
From smt.digitalairlines.com
The importation failed because the certificate expires on 2019-06-05

When you try to import it two times, the error is :
Code:
A certificate has been already imported
but the server connection still cannot be trusted.

Please fix the certificate issue manually, ensure that the server can be connected securely and strat the ysqt module again
OK, I guess it is impossible to continue this training yet ...