Pokémon GO developer Niantic has confirmed its plan of improving the invitation system for EX Raid Battles. The developer will make changes based on feedback from a number of fans. “Trainers, thank you for your feedback on EX Raid Battles,” Niantic said in a recent statement on Twitter. “We’re working to improve the invitation system based on what we heard from you.” What the improvements are specifically have yet to be detailed, but stay tuned for any updates.
Source: Niantic Support