XX-XY Athletics, founded by Jennifer Sey, faced a permanent advertising ban from TikTok due to an ad defending women's sports and opposing the inclusion of trans-identified males. The ad, promoting fairness and safety for female athletes, was deemed offensive by TikTok. Despite the ban, Sey plans to appeal the decision, emphasizing the brand's commitment to supporting girls and women in sports. The company's stance on maintaining sex-based divisions in sports has sparked controversy and discussions about women's rights in athletics. XX-XY Athletics, known for advocating for women's sports, faces challenges in navigating social media platforms amid debates over gender inclusion in sports.