Since you are using an ice host override, I recommend emptying the iceserversconfigs field, as it complicates things. Then restart the plugin.
I also see you are using our Desktop app. While we debug this, it may be easier to use a Chrome browser so you can more easily access the full logs.
Bear in mind that the client logs will contain IP addresses.
In any case, I recommend going through our documented connectivity checks to ensure the network is configured as expected.