Using basic Auth on webhook url?

I have a post endpoint that is secured by default with Basic Authentication.
when I created the webhook for the lock I provided the credentials (https://username:[email protected]/api/unloc_webhook)

I tested my URL multiple times with postman and get 200 back on POST, but when unlocking the lock I don't receive any data.
I also used a website https://webhook.site to check if I configured the correct lock , and I can confirm that the lock is correct!
Please help!