“No more Data Collector slots”
The error message can happen when you try to register a new Data Collector when a Data Collector is already running on your account or has not been stopped/unregistered before you install/register another Data Collector on another computer.
Adding a Data Collector slot
Having multiple Data Collectors is perfectly fine to channel data to your account from different networks. If you need more Data Collectors available, add as many as you need for the desired installations.
As a dealer
Go to the Admin > Data Collectors section, for the account in question, and press the “Add Extra DC” button to allow another Data Collector to connect to the account.
As a customer
Contact your dealer to request adding another Data Collector slot to your account.