Interesting that this is the second P!=NP proof from a University of Bonn researcher. Other one, by Mathias Hauptmann, is here: https://arxiv.org/abs/1602.04781

I never did hear the status of Hauptmann's proof (I'm not connected to academia so only know what I've read on the internet), but given it's been over a year without word, presumably there's something flawed.

I might not get too excited over this proof, either, until another member of the TCS community can vouch for it. There have been many serious-looking attempts at PvNP that turn out to have fundamental flaws.