@"Auzari" , sadly they haven't tried to fine me. I would surely insist on more screenshots/evidences. And I'm sure, they would fail at providing more evidences which would give them the right to fine me.
And as a Junker, I would RP it and ask from the lawful side (or whoever provided the evidences), to give an useful evidences. That those evidences/screenshots aren't valid. And depending on those screenshots, they can't do anything. In such case, everything would be fine. Get it as a recommendation for the next time. Use times, show when the screenshots are taken. And use more valid screenshots next time.
P.S Also, as in RP Junkers would have no threat from the lawful side too. As inRP they answered correctly. And there would be nothing to discuss about. But using the screenshots which can't really be valid inRP, is something far from a proper RP.