The Client requirements page says that xwayland may not work due to a known bug. This, however, isn't a bug. It's a security feature of wayland, not allowing apps to run wayland backend components as root.
It would be great if the screenconnect client could be made to work with policykit, so that it works under xwayland. Wayland is the current realty of fedora, and the coming reality of RHEL. This will be an increasing need.
Customer support service by UserEcho