HOW Captive Portal Open Link URL

Good Afternoon,

I am doing a project in arduino where I use the WiFiManager library with ESP8266 NodeMcu board. The problem is that once the WiFi credentials are configured and saved, I need to press a link ("Añadir O2BASE") and it redirects to mydomine.com, but since the link is in the captive portal, I am connected to a local network and therefore I can't access mydomine .

Maybe it can be configured so that the local network created by WiFiManager Arduino is inside my mydomine,com server?

Does anyone know any solution?

Thanks a lot