Sudomain

Hello dear support. I want to create a website on a subdomain. The subdomain is not visible, therefore in maintenance mode until all data has been taken over from the old page and everything is free of errors (spo.silbermoewe.de). If everything is OK I want to assign the main domain (silbermoewe.de) the spo.silbermoewe.de working folder.
Do I need to buy 2 versions of Elementor, about 1x for the preliminary subdomain and then for the new, real one: http://www.silbermoewe.de ??
Many thanks for the answer

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