If you encounter a Failed to fetch message or get an ICE error, this means that there is a connectivity issue between you and Lookback. This is typically related to a firewall blocking your connection in some way. If you're connecting via a work network or VPN, it's possible that your network administrator may be blocking certain ports that Lookback relies on for connectivity.
If you're working from home and getting one of these errors, please review: Troubleshooting connectivity issues when working from home.
If you're a network administrator or your users are encountering this error, please review: Firewall instructions for your IT team.