This often happens in corporate environments or residential networks that are secured and forbid outgoing connections on non-standard ports.

• Try to close all background applications, restart your device, and ensure you're playing on the latest version before starting the game.
• If the issue persists, try to enable a VPN on the device.
• In case it didn't work, open the link. If you don't have access, contact your internet provider and ask them to grant it to you.