You can use member login and chat services by creating a JWT token for chatting or statistical data collection in Saucelive and passing it to the Saucelive Player as a queryString.
After logging in, move the page by attaching the JWT token generated through linking with the server as a query string to the address received through returnUrl, etc. as follows.
https://player.sauceflex.com/broadcast/{Broadcastadress}?accessToken={JWT_Token}