"Strange" password was setted up

Hi! Several days ago, my trainee wanted to joke at Halloween and changed password for routerboard on the sly via my laptop. He generated random password online (not unix compatible), opened winbox, pasted “!sSp$BU!Qu*9yr%@” (without quotes) in GUI window and pressed “Ok”. Then connection via winbox was lost and when he tried connect with the same password, error was occurred.

Of course, I have backups, but it is still interesting to know which password is correct now. Do you have any ideas?

This should work fine in any recent RouterOS version. What version of RouterOS and Winbox are you using? Have you tried SSH ?

Winbox v3.4, RouterOS v6.34.4
This “joker” turned off all connection types excepting Winbox…

Reset. And never let this joker touch your computer again.