In order to access the FusionReactor (SaaS) Cloud application interface, you need an account, which you should create using a valid email address.
The URL address to access is : https://app.fusionreactor.io/
If you register for a FusionReactor cloud trial or have a cloud license then these can be accessed via that URL.
In order to see monitoring data within your FusionReactor account, you will need to install the agent onto a supported instance and have activated that instance using your cloud license key. Cloud license keys have the following format :
CLOUD-XXXXX-XXXXX-XXXXX-XXXXX-XXXXX