Problem with sandbox webhook


We are testing sandbox and were trying to test webhooks with out test server, but we did not received any webhooks when we added it to settings in sandbox console. It worked fine with ngrok. However, if we make request to our domain from postman is received too, but somehow nothing is received from sandbox when we try to do transactions

Hey @DSansyzbayev can you share the webhook URL please?

Looks like there’s an issue with the TLS certificate on your side.
We are getting the following error:
unable to verify the first certificate

Same for my test in POSTMAN:

Thanks, will research