Why can't US citizens use Trading 212?

Why is it that Trading 212 is not accessible to US citizens? Could there be any regulatory constraints or legal issues that are preventing them from offering their services to American traders? It's intriguing to understand the underlying reasons behind this exclusion, especially given the growing popularity of cryptocurrency and online trading platforms worldwide. Is there a way for US-based investors to still access similar trading opportunities, or are they limited to alternative options? Clarifying this matter could provide valuable insights for those interested in exploring the world of cryptocurrency trading.