It seemed newly created accounts couldn’t update the collection. This was the critical piece of information I was missing, the fact that is was a newly created account.
I just pushed a fix. Please let me know if it works.
Works for me now thanks 
It seemed newly created accounts couldn’t update the collection. This was the critical piece of information I was missing, the fact that is was a newly created account.
I just pushed a fix. Please let me know if it works.
Works for me now thanks