Thanks. It is for the testing of mobile app, so at least for now all users are only from load injection tool, not around the globe.
So, in this case, can I use Environment AG instead of Cluster AG? I am wondering have you try it before?
In this case, I would try to change the value of DTX Beacon URL to be https://<Environment_AG_URL>:9999 after enable the firewall to allow 9999.
An ActiveGate that has a beaconforwarder running needs to be installed (I'm not that familiar with the different AG flavours, but based on my knowlege a cluster AG is needed), then the configuration to use should be displayed correctly - please use the displayed configuration and don't try to stitch something together.