ThingPark X IoT Flow is how Actility routes data out of its network server. Pointing one of those connections at Cloud Studio IoT is enough for the platform to receive the uplinks of every device on the deployment, decode them and show them. As with the other network servers, you need your instance name and an access token.
Log in to community.thingpark.io with the account that manages your deployment.
Go to Connections > Create > ThingPark X IoT Flow and set up the connection towards your platform instance with its access token.
Create the devices in Cloud Studio IoT with their address and model, and check that the first uplinks arrive.