Meta, the parent of Facebook, WhatsApp and Instagram, is challenging the new EU rules. Photograph: Yui Mok/PA Wire Brussels is facing at least two legal challenges against its new landmark digital rules, as Meta and TikTok appeal against the EU’s attempt to make online markets more competitive. TikTok, owned by China’s ByteDance, on Thursday challenged the EU’s decision to brand it a “gatekeeper” under the Digital Markets Act because such designation could hamper the company’s ability to grow. TikTok appealed against the EU’s assumption that businesses are dependent on its services to reach customers, a key metric to be captured…