Numbers offline

I have just updated to Numbers 5.2 and I cannot edit my shared documents because it says Numbers is offline.

The green sharing icon has a red exclamation point and upon clicking anything I get the alert: “Numbers is connecting to iCloud. You’ll be able to edit this shared spreadsheet once Numbers is online.”

Needless to say, I am online, iCloud is properly sync’d and the iPad where the shared account receives and sees the docs works flawlessly and is connected.

What is happening?

What can I do?

Thank you