Update registration link

Author: wesbland

meetings/2025/09/logistics.md

@@ -11,8 +11,9 @@ month: "09"
 Advanced registration for this meeting will be required. **Registration is
 required regardless of whether attending in-person or remotely.**
 
-**All Attendees** need to register with the MPI Forum:
-[https://forms.gle/RA9EPuLxVzFLdPFX7](https://forms.gle/RA9EPuLxVzFLdPFX7)
+Participants need to register both with the conference organizers.
+
+* Conference: [https://www.eventbrite.com/e/mpi-forum-eurompi-iwomp-tickets-1500373821489](https://www.eventbrite.com/e/mpi-forum-eurompi-iwomp-tickets-1500373821489)
 
 ### Meeting Location