The tool, available in the US, Australia and South Korea since 2021, was expanded to other countries last year.
But Reset.Tech Australia said it was removed in recent weeks, except in the European Union.
In a BBC interview, Mr Nelson says he wants to make sure "we get there first".
His comments revive memories of the 1960s and 1970s, when Nasa was in a space race with the Soviet Union. But half a century later, Nasa is employing private companies to do much more of the work.
Byju's has implemented a new social media policy that restricts employees from engaging with the media. This decision coincided with the company's announcement of significant business restructuring and the potential dismissal of 4,000 to 5,000 employees.
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