Sync Gateway error

I have checked and here is the result
2016-07-15T10:47:39.463+08:00 Changes: MultiChangesFeed({AMK, CCK, EU, TM}, {Since:0 Limit:0 Conflicts:true IncludeDocs:false Wait:false Continuous:false Terminator:0xc0823d2d20 HeartbeatMs:300000 TimeoutMs:300000 ActiveOnly:true}) … (to Joyce)

2016-07-15T10:47:39.473+08:00 Changes+: MultiChangesFeed: channels expand to channels.TimedSet{“AMK”:channels.VbSequence{VbNo:(*uint16)(nil), Sequence:0x2}, “CCK”:channels.VbSequence{VbNo:(*uint16)(nil), Sequence:0x2}, “EU”:channels.VbSequence{VbNo:(*uint16)(nil), Sequence:0x2}, “TM”:channels.VbSequence{VbNo:(*uint16)(nil), Sequence:0x2}} … (to Joyce)

i sometimes can sync down and i sometimes cant. If lets say i am using two separate mobile phones to access the same couchbase sever, i change to change the Ip according to the phones specific Ip address for the right?