My Zapier to Mailchimp zap integration cannot be set up.

I’ve been trying to create a zap that connects my Google Contacts with MailChimp, so that every new or updated contact updates my subscribers in MailChimp.

When setting up the Zap, when it comes to the MailChimp set up, i’m unable to log in my mailchimp account via zapier, and it says my password is wrong.  However, when i log into MailChimp on Mailchimp itself, the same password logs me in, and i have no issues logging in.

May i know what could be the problem?