No webhook notification from external to fireblocks in Sandbox

Developer Discussion
1

I transfer from google faucet to fireblocks for ETH_TEST. there is no notification sent to webhook

2

I had the same issue. The problem was putting the configuration in the wrong place.
You should use Push API webhooks:
here is documentation link:
https://support.fireblocks.io/hc/en-us/articles/8319984208412-Push-API-Webhooks