I previously wrote to start the connection, it is not necessary. So follow these corrected steps. Sorry for any confusion.
– Remove/disable 2FA for the connection on the NoMachine macOS side (Settings > Network > Machine > Two-factor, Change, remove the tick from “require 2FA” box, remove the User Id from the box, click Apply)
– Enable level 9 in Server > Security > Logs and restart the server.
– Enable 2FA for the connection again in Network (Settings > Network > Machine > Two-factor, Change, tick the “require 2FA” box), insert the User Id/NoMachine account, click Apply.
– What should appear is the push-notification I’ve attached (there’s a short version, and then the long version (attached) when you click on the short version).
– Go back to Server > Security and click Take logs. Save and send to us.