Obtain Stardog free license - Heavy load error

I am looking to try the free cloud offering of stardog but whenever I try to get started I get the below warning message. When should I expect the system to be able to handle my request? Is there an alternative way to evaluate building a graph in stardog w/o needing a free cloud license?

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I apologize for the inconvenience. We have corrected the issue on our end. Please try again.