Some Trainers may experience a bug where they are unable to join or interact with a Raid Battle. Players may see a red error banner when experiencing this bug.
Many of the causes for this issue have been resolved in Pokémon GO in version 0.67.2 (1.37.2). Please download this update when it becomes available to you.
We are aware of other causes for this issue and are actively working to resolve them.
Here are some suggestions that may help resolve this issue:
- Use automatic (network provided) time and date
Make sure that your device's time and date is set to update automatically.
- Stay within range of the Gym
Don't move out-of-range of the Gym during the battle.
- Check your internet connection
Ensure your device is connected to a reliable data connection (Wifi, 3G, or 4G).