We can control for each domain which page is appearing after a conference in
// Enabling the close page will ignore the welcome page redirection when // a call is hangup. enableClosePage: true,
In close2.html we can add a redirect to a donation page.
When we set in
/usr/share/jitsi-meet/interface_config.js the following line:
/usr/share/jitsi-meet/static/close3.html and can show something else.
There are events like readyToClose and videoConferenceLeft which can be used to hide/remove the iframe and present something else, see the discussion.