Eleksmaker not working after software update

Hello folks,
I have updated (after more then a year!) my software. Unfortunately, the laser is not working anymore after the update.
It shows ready in the laser tab. I type $$ in the console, and get the grbl settings ok.
I send a job and it shows “streaming” . The laser just does not move. Same with the fire button in the move tab, i can trigger it on and off, but laser does not light.
I am using eleksmaker 5 watts. At the time of update, it asked me for updating serial interface, that I did not select. Is this the cause? If so, how can I correct it?
Thanks in advance!
Paul