Connecting Central Zapier with Google Sheets

Hi

I’m trying to create a Zap using Central Zapier. The trigger is a New Form Response on Google Forms, and that connects to my Forms account fine:  

But for the action -- Update Spreadsheet Row in Google Sheets -- when I try to set a specific value for the field (ie, select the Google Sheet I want to use for this) it says there are no options available, as below.  I’ve tried logging out and logging back in and checked that my Google accounts are connected to my Zapier. Any ideas, please?