Bulk notifications don't work, gives error 9. What's wrong?

Question

Classmates

I'm trying to send a notification, but I get an error:
{"error_code":9,"error_msg":"IP_BLOCKED : REST access denied for not listed IP 109.234.156.150 (check app server ip configuration)","error_data":null}
Please tell me what's wrong?
Thanks

Answer 1

In the application settings, you need to add the IP address of the server from which the method is called to the "Server IP address" setting