Connection gets dropped between two users

Scenario
User A creates a room
User B joins the room that was created

connection is establish and after a few seconds User A gets disconnected and a gray screen shows up.
If user B gets removed from the room user A automtically gets connected again.

Need help trying to debug the issue.
This is what I see in the jvb log.

JVB 2018-12-12 21:21:07.625 INFO: [184] org.jitsi.videobridge.IceUdpTransportManager.log() CAT=stat ice_state_change,conf_id=ba9ddc22d2e142e8,content=data,ch_id=db2678d873d91b11,endp_id=fafadac7 old_state=Waiting,new_state=Running
JVB 2018-12-12 21:21:07.625 INFO: [184] org.ice4j.ice.Agent.log() Trigger checks for pairs that were received before running state
JVB 2018-12-12 21:21:07.625 INFO: [184] org.ice4j.ice.ConnectivityCheckClient.log() Start connectivity checks. Local ufrag 3djvj1cui4msdp
JVB 2018-12-12 21:21:07.628 WARNING: [139] org.jitsi.videobridge.EndpointMessageTransport.log() SCTP connection with 74c385b4 not ready yet.
JVB 2018-12-12 21:21:07.628 WARNING: [139] org.jitsi.videobridge.EndpointMessageTransport.log() No available transport channel, can’t send a message
JVB 2018-12-12 21:21:07.651 WARNING: [186] org.jitsi.videobridge.EndpointMessageTransport.log() SCTP connection with fafadac7 not ready yet.
JVB 2018-12-12 21:21:07.651 WARNING: [186] org.jitsi.videobridge.EndpointMessageTransport.log() No available transport channel, can’t send a message
JVB 2018-12-12 21:21:07.659 INFO: [186] org.jitsi.videobridge.IceUdpTransportManager.log() Starting ICE agent without remote candidates.
JVB 2018-12-12 21:21:07.659 INFO: [186] org.ice4j.ice.Agent.log() Start ICE connectivity establishment. Local ufrag a6jga1cui4msd5
JVB 2018-12-12 21:21:07.659 INFO: [186] org.ice4j.ice.Agent.log() Init checklist for stream stream
JVB 2018-12-12 21:21:07.660 INFO: [186] org.ice4j.ice.Agent.log() ICE state changed from Waiting to Running. Local ufrag a6jga1cui4msd5
JVB 2018-12-12 21:21:07.660 INFO: [186] org.jitsi.videobridge.IceUdpTransportManager.log() CAT=stat ice_state_change,conf_id=ba9ddc22d2e142e8,content=data,ch_id=3c1c5ecccb832c5a,endp_id=74c385b4 old_state=Waiting,new_state=Running
JVB 2018-12-12 21:21:07.660 INFO: [186] org.ice4j.ice.ConnectivityCheckClient.log() Start connectivity checks. Local ufrag a6jga1cui4msd5
JVB 2018-12-12 21:21:07.668 INFO: [233] org.ice4j.ice.Component.log() Update remote candidate for stream.RTP: 25.6.206.170:60954/udp
JVB 2018-12-12 21:21:07.669 INFO: [233] org.ice4j.ice.Component.log() Update remote candidate for stream.RTP: 10.64.214.204:51926/udp
JVB 2018-12-12 21:21:07.669 INFO: [233] org.ice4j.ice.Component.log() Update remote candidate for stream.RTP: 25.6.206.170:9/tcp
JVB 2018-12-12 21:21:07.669 INFO: [233] org.ice4j.ice.Component.log() Update remote candidate for stream.RTP: 10.64.214.204:9/tcp
JVB 2018-12-12 21:21:07.670 INFO: [233] org.ice4j.ice.Component.log() new Pair added: 10.10.50.164:443/tcp/host -> 25.6.206.170:9/tcp/host (stream.RTP). Local ufrag a6jga1cui4msd5
JVB 2018-12-12 21:21:07.670 INFO: [233] org.ice4j.ice.Component.log() new Pair added: 10.10.50.164:443/tcp/host -> 10.64.214.204:9/tcp/host (stream.RTP). Local ufrag a6jga1cui4msd5
JVB 2018-12-12 21:21:07.670 INFO: [233] org.ice4j.ice.Component.log() new Pair added: 10.10.50.164:10000/udp/host -> 25.6.206.170:60954/udp/host (stream.RTP). Local ufrag a6jga1cui4msd5
JVB 2018-12-12 21:21:07.670 INFO: [233] org.ice4j.ice.Component.log() new Pair added: 10.10.50.164:10000/udp/host -> 10.64.214.204:51926/udp/host (stream.RTP). Local ufrag a6jga1cui4msd5
JVB 2018-12-12 21:21:07.670 INFO: [233] org.ice4j.ice.Component.log() new Pair added: 18.213.237.240:443/tcp/srflx -> 25.6.206.170:9/tcp/host (stream.RTP). Local ufrag a6jga1cui4msd5
JVB 2018-12-12 21:21:07.670 INFO: [233] org.ice4j.ice.Component.log() new Pair added: 18.213.237.240:443/tcp/srflx -> 10.64.214.204:9/tcp/host (stream.RTP). Local ufrag a6jga1cui4msd5
JVB 2018-12-12 21:21:07.670 INFO: [233] org.ice4j.ice.Component.log() new Pair added: 18.213.237.240:10000/udp/srflx -> 25.6.206.170:60954/udp/host (stream.RTP). Local ufrag a6jga1cui4msd5
JVB 2018-12-12 21:21:07.671 INFO: [233] org.ice4j.ice.Component.log() new Pair added: 18.213.237.240:10000/udp/srflx -> 10.64.214.204:51926/udp/host (stream.RTP). Local ufrag a6jga1cui4msd5
JVB 2018-12-12 21:21:07.674 INFO: [188] org.ice4j.ice.Component.log() Update remote candidate for stream.RTP: 25.6.206.170:60954/udp
JVB 2018-12-12 21:21:07.674 INFO: [188] org.ice4j.ice.Component.log() Not adding duplicate remote candidate: 25.6.206.170:60954/udp
JVB 2018-12-12 21:21:07.674 INFO: [188] org.ice4j.ice.Component.log() Update remote candidate for stream.RTP: 10.64.214.204:51926/udp
JVB 2018-12-12 21:21:07.675 INFO: [188] org.ice4j.ice.Component.log() Not adding duplicate remote candidate: 10.64.214.204:51926/udp
JVB 2018-12-12 21:21:07.689 INFO: [29] org.jitsi.videobridge.health.Health.log() Performed a successful health check in 67ms. Sticky failure: false
JVB 2018-12-12 21:21:07.694 INFO: [6453] org.ice4j.ice.ConnectivityCheckClient.log() Pair failed: 10.10.50.164:10000/udp/host -> 25.6.206.170:60954/udp/host (stream.RTP)
JVB 2018-12-12 21:21:07.703 INFO: [6445] org.ice4j.ice.ConnectivityCheckClient.log() Pair failed: 10.10.50.164:10000/udp/host -> 192.168.56.1:64925/udp/host (stream.RTP)
JVB 2018-12-12 21:21:07.715 INFO: [6453] org.ice4j.ice.ConnectivityCheckClient.log() Pair failed: 10.10.50.164:10000/udp/host -> 10.64.214.204:51926/udp/host (stream.RTP)
JVB 2018-12-12 21:21:07.724 INFO: [6445] org.ice4j.ice.ConnectivityCheckClient.log() Pair failed: 10.10.50.164:10000/udp/host -> 169.254.113.89:64926/udp/host (stream.RTP)
JVB 2018-12-12 21:21:07.735 INFO: [6453] org.ice4j.ice.ConnectivityCheckClient.log() Pair failed: 10.10.50.164:443/tcp/host -> 25.6.206.170:9/tcp/host (stream.RTP)
JVB 2018-12-12 21:21:07.750 INFO: [6431] org.ice4j.ice.ConnectivityCheckClient.log() Pair succeeded: 10.10.50.164:10000/udp/host -> 192.168.103.67:64924/udp/host (stream.RTP). Local ufrag 3djvj1cui4msdp
JVB 2018-12-12 21:21:07.750 INFO: [6431] org.ice4j.socket.MergingDatagramSocket.log() Adding allowed address: 192.168.103.67:64924/udp

I also a lot of
WARNING: [139] org.jitsi.videobridge.EndpointMessageTransport.log() SCTP connection with 74c385b4 not ready yet.
JVB 2018-12-12 21:21:07.628 WARNING: [139] org.jitsi.videobridge.EndpointMessageTransport.log() No available transport channel, can’t send a message

any advise would be appreciated.

I followed the quick install guide. I’m also using ubuntu 14.4
I am using a loadbalancer and configure the sip file to include the settings from the advance section of the installer.

I keep getting a bunch of these warnings
WARNING: [608] org.jitsi.videobridge.EndpointMessageTransport.log() SCTP connection with c511c027 not ready yet.
JVB 2018-12-12 23:43:23.666 WARNING: [608] org.jitsi.videobridge.EndpointMessageTransport.log() No available transport channel, can’t send a message
JVB 2018-12-12 23:43:25.664 WARNING: [608] org.jitsi.videobridge.EndpointMessageTransport.log() SCTP connection with c511c027 not ready yet.
JVB 2018-12-12 23:43:25.665 WARNING: [608] org.jitsi.videobridge.EndpointMessageTransport.log() No available transport channel, can’t send a message
JVB 2018-12-12 23:43:27.666 WARNING: [608] org.jitsi.videobridge.EndpointMessageTransport.log() SCTP connection with c511c027 not ready yet.
JVB 2018-12-12 23:43:27.667 WARNING: [608] org.jitsi.videobridge.EndpointMessageTransport.log() No available transport channel, can’t send a message
JVB 2018-12-12 23:43:29.666 WARNING: [608] org.jitsi.videobridge.EndpointMessageTransport.log() SCTP connection with c511c027 not ready yet.
JVB 2018-12-12 23:43:29.666 WARNING: [608] org.jitsi.videobridge.EndpointMessageTransport.log() No available transport channel, can’t send a message
JVB 2018-12-12 23:43:31.663 WARNING: [608] org.jitsi.videobridge.EndpointMessageTransport.log() SCTP connection with c511c027 not ready yet.
JVB 2018-12-12 23:43:31.663 WARNING: [608] org.jitsi.videobridge.EndpointMessageTransport.log() No available transport channel, can’t send a message
JVB 2018-12-12 23:43:33.066 WARNING: [608] org.jitsi.videobridge.EndpointMessageTransport.log() SCTP connection with c511c027 not ready yet.
JVB 2018-12-12 23:43:33.066 WARNING: [608] org.jitsi.videobridge.EndpointMessageTransport.log() No available transport channel, can’t send a message
JVB 2018-12-12 23:43:33.354 INFO: [29] org.jitsi.videobridge.Videobridge.log() CAT=stat create_conf,conf_id=cef6d96d9d0b4f4d conf_name=null,logging=false,conf_count=2,ch_count=6,v_streams=4
JVB 2018-12-12 23:43:33.374 SEVERE: [701] org.ice4j.socket.MergingDatagramSocket.log() Cannot find socket to remove.

But what about the advanced part, did the jvb config? The port forwarding? Make sure there is no firewall rules blocking those ports.