Why did Frank Clyburn leave IFF?

Could you please clarify the reasons behind Frank Clyburn's departure from the International Finance Forum (IFF)? Was it a personal decision or were there any specific factors that contributed to his leaving? Was there any conflict or disagreement that led to his resignation? It would be interesting to know the underlying reasons and motivations behind such a move, especially considering his previous contributions and expertise in the field of finance and cryptocurrency.