All those who have a UdK account, log in here *:https://medienhaus.udk-berlin.de/classroom and subsequently join the course (#edu-psyche) room: https://medienhaus.udk-berlin.de/classroom/#/room/#edu-psyche:medienhaus.udk-berlin.de(or install matrix client apps like Element or Fluffychat and put "medienhaus.udk-berlin.de" as homeserver)
also reachable via 1 other path through the graph