Connect unsubscribe webhook with API point

Hello!
I am trying to connect an unsubscribe webhook to my Java SpringBoot application.
I’ve created my webhook from the Campaigns>Setting>Webhooks and I’ve set the link to my https://my-domain/end-point
I’ve created a method in my controller that handles the unsubscribe event that is PostMapping to the same end-point defined in the webhook.
When I run it from postman it works fine, but when I send a test campaign and unsubscribe from it nothing happens in the backend.
Nothing happens even if I send an unsubscribe test event from the webhooks section. It doesn’t reach the server at all.
What could be the problem here? Have I missed any steps?

Hi @Deea28 , thanks for posting on this community.

Nothing happens even if I send an unsubscribe test event from the webhooks section. It doesn’t reach the server at all.

So you mean that the event is not leaving Brevo servers at all, is that correct? If that’s the case, I would recommend to contact Brevo support team, and to tell us here which reply you got