Is this the url you are looking for? (https://www.tplinkcloud.com/)
I use this url with WebViewer and log into my account from there to see the webcams video.
it is suppose to be cloudbase webcam where I can see the video anywhere.
Looks like you can find the IP address for your camera on your local network
It appears a web browser plug in is required ? https://www.tp-link.com/en/support/faq/879/
This may mean it will only work with the native browser, in that the App Inventor webviewer cannot load such a plugin. I don't know...
by using it, i manage to call chrome applications and link to the url.
when I click onto back button, it went back to the application.
it works so well you even feel like the chrome application is part of your applications.
thank you! @TIMAI2 for your helps and suggestions! i really appreciated your help!