For our synapse challenge, there are some pending join requests. Although we are the admins for the challenge, we get the note "Sorry, you do not have sufficient privileges for access. Cannot add member to Team." Although it was possible to accept requests in the past.
Can you help us with that one? It's about "EndoVis Participants" (https://www.synapse.org/#!Team:3390050) for our challenge https://www.synapse.org/#!Synapse:syn18779624/wiki/591266.
Thanks and best wishes,