If your browser is Chrome, it seems that there are cases where pop-ups (displayed on a separate screen) are blocked depending on the settings on the Chrome side. (In that case, Now Loading will remain displayed on the screen.)
We apologize for the inconvenience, but please change the settings or try linking with another browser such as Safari.
Or if you are using the ad blocking tool, please temporarily disable it and try it.
Please refer to the following Chrome help page for changing the settings in Chrome.