Is Bitflex legit?

Could you please clarify for me if Bitflex is considered a legitimate platform within the cryptocurrency industry? I've been hearing mixed reviews and I'm hesitant to invest my hard-earned money without a clear understanding of its credibility. What are some key factors I should consider when evaluating the legitimacy of a cryptocurrency exchange like Bitflex? Are there any red flags or positive indicators that I should be aware of? I would greatly appreciate your insights and guidance on this matter.