Klavyio can't be connected to WooCommerce anymore. Unable to authenticate API

Hi all,

First of all thank you for the help already.

Since we are using Cloudflare, Klavyio integration with WooCommerce doesn’t work anymore.
We added the user agent Klavyio/1.0 but we still get the message from Klavyio "Unable to access API (unable to authenticate.

Any guesses?

Thank you!

This is the error I’m getting