I'm having the same issue, do you see any thing wrong with the config.xml file?
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<config xmlns="http://www.pulseway.com/linuxconfig">
<Account Username="**********************" Password="*********************" UseCustomServer="false" CustomServerAddress="" />
<ComputerInformation Name="Ubuntu" Group="Default" />
<AllowedCommands>
<Restart Allowed="true" />
<ShutDown Allowed="true" />
<PowerOff Allowed="true" />
<Suspend Allowed="true" />
<Hibernate Allowed="true" />
</AllowedCommands>
<Notifications>
<WhenOffline Enabled="false" />
<OnOnline Enabled="false" />
<OnShutdown Enabled="false" />
<MemoryLow Percentage="10" Enabled="false" />
<HighCpuUsage Percentage="90" Minutes="1" Enabled="false" />
<LowCpuUsage Percentage="10" Minutes="1" Enabled="false" />
<PortClosed Minutes="1" Enabled="false" />
<LowHDDSpace Enabled="false">
<Hdd Percentage="20" Path="/" Enabled="true" />
</LowHDDSpace>
<IpChange Enabled="true"/>
<PingResponses Enabled="false">
<PingResponse PriorityOnSlowResponse="1" PriorityOnNoResponse="0" Minutes="5" Miliseconds="50" Alias="Printer" Address="10.10.10.2" Position="1"/>
</PingResponses>
</Notifications>
<Network>
<Ping Server="" Enabled="false" />
<MonitoredPorts>
<Port Type="TCP" Number="80" Name="80" Address="www.google.com"/>
</MonitoredPorts>
<NetworkInterfaces>
<Interface Name="eth0" />
</NetworkInterfaces>
<WoWAN Port="9" Enabled="false"/>
</Network>
<MaintenanceMode>false</MaintenanceMode>
<Proxy Enabled=“false” Host="proxy.host" Port="8080" User="proxy.user" Password="proxy.password"/>
</config>
