I have uploaded 4000 user ids which have been hashed as per the documentation, each user name is on a separate line:

I have applied changes to the audience endpoint and it has completed.
When I check the status via the Ads Dashboard however, it’s stuck at “processing”?
When I run a GET against: https://ads-api.twitter.com/0/accounts/xxxxxx/tailored_audiences/yyyy
I can see the audience size is too small?

Am I doing something wrong?
Do I need to wait longer?
Thanks in advance"
UPDATE 07/07/2016
I have tried another upload this morning:

The others from over 24 hours ago are still in PROCESSING:
This is rather frustrating as the AdsAPI challenge closes in just a few weeks and we really need this to work.