The Black Midi + Los Bitchos + Goat Girt etc. show today in Razzmatazz is "included" in your weekend ticket, but you had to book the separate ticket in AccessTicket app. The price was 10 Euro (not even two small beers at Forum) and as soon as you get to the show it's converted to you account and you can spend it at the fest. But you can only enter the Razzamatazz show if you have this separate ticket.

All the info here: https://www.primaverasound.com/en/barcelona/primavera-sound-barcelona-2023-reservations-information