Anyone using HousecallPro and Brevo? Struggling to get the Zapier API to work

I use HousecallPro for my scheduling and the use zapier to update records between Brevo and HCP. However, the zapier API doesn’t work as expected. Anyone able to assist or advise on resources that can cover this. There is not a great deal of subject matter on this.

Hi there! Thanks for your message! Could you please confirm which actions you are using in Zapier?

Thanks!