Hi Frank,

As we have discussed together.

These are the potential issues if somebody encounters the same issue

1. The destination resource is rejecting the connection
2. A firewall is blocking the connection
3. There is a routing issue
4. No process is listening on the IP:Port combination that the client is trying to connect to
5. The connection attempt was dropped while being routed to the resource

And in your case it's number 4 where the port is not included in the outbound.

Hope this helps, upvote and mark it as solved if possible.

Thanks!

Hi Andry,

Thanks for your help. 

I tested through postman. GET to my URL works well. I also use POST to create a lead in my odoo. It works well. 

So could it be the plugin has a problem?