Hanno's university web page lists him as "senior lecturer (associate professor)".
From the youtube, the both of them, while being very cautious, (understandable for physicists with reputations to protect) do not see this as being a fraud or a scam.
The facility index didn’t say so.
If he was a professor it would have said so, Senior Lecturers are normally people seeking a PH.D. and have a Masters Degree. although they could be a Professor, it would have stated it in the Facility List.
Could be he just recently achieved this honorary.