In the router there were 2 configurations being one redirecting the external port 443 to the internal 443 and the other 8443 to the 443. I remotely accessed the bOS by DDNS through the external port 8443, which had been configured manually in the bOS Client. But in the registry of the server (in the Comfortclick's account) it was 443. So I replaced it with 8443.
Problem solved. The Local Internet Provider blocked port 443. So, I changed external port to another on the router and update it on the bOS server register. Now, Alexa discover all devices.
Yes, I can access bOS remotely outside network and all created endpoints are named.
IP Address (bOS - server): 192.168.0.22 (reserved on the router)
IP Address (Alexa): 192.168.0.40
port 443 forwarded to 192.168.0.22 on the router.
Alexa account is linked with Comfortclick account.
Hi Jürgen, thank you for your help. I have done it several times and Alexa is on the same network of the bOS server. Alexa still does not discover the devices.
Customer support service by UserEcho