Help with my "Share Link on Facebook" awaiting task

Hello all. I am fairly new to the group, and I'm a bit confused. I currently have the "Share Link on Facebook" task in my "awaiting tasks" folder but, when I went to post my reply with my screenshot today, I was unable to complete the task, as it seems the thread has been closed. My questions are these:

1. Can I use the "new" tab inside this thread to post my screenshot  for the moderators to review?  or

2. Is this promotion over, and I should just hit "cancel" to remove this task completely, from my "awaiting tasks" folder?

Thank you in advance, for any help and guidance, that anyone may be able to give me.

Kindest Regards!