@Fred H
Hello!
No domain names exist for bootstrap server IP addresses but we see that they are not blocked, in spite of what you wrote Eddie can talk with them fine. From the report the problem is different, apparently it's the VPN connection (by WireGuard in your case) that's blocked, probably you just need to require no restriction against UDP toward one of the WireGuard ports of our servers (1637, 51820).
Kind regards