Symptom: A buyer who checked out rapidly on the same Squarespace order left multiple near-identical pending registrations, and some paid seats remain stuck as Pending or Incomplete.
Cause: Rapid repeat checkouts on the same order can create duplicate pending batches. Previously, the sync could abort mid-batch when it tried to activate a duplicate that was already ticketed on the same order, leaving other paid seats stranded.
Fix: Eventually now automatically detects same-order duplicate pending registrations during sync. The redundant reservation is discarded and its seat is released back to capacity. The rest of the batch continues syncing normally, so other paid seats should complete without manual intervention. If a seat still looks blocked after sync completes, check the Guests tab for any remaining Incomplete rows and remove them manually.
Repeat purchases across different orders still work as before. Each distinct order creates its own separate registration.