Paid 90$ got no mail with tickets, didn't get to see Robin Schulz. Flavorus -Never again.
(Although I have to point out, that costumer service is quite nice and offered me to see another event at the club. Which I don't want to. I paid for Schulz and only wanted to see him! Or at least get a full refund! But what is a good costumer service worth if the ticketing systemis full of errors!)
Update: After writing a few bad reviews, contacting consumer assistance, etc.
I got my full refund. I think its fair to mention that here, because the rumor of flavorus never giving refunds is appearently wrong. But with all the effort I had to go through to achieve that good outcome, I still leave my rating at "I would not recommend it".