f5 11.3 LTM APM Citrix iApp with StoreFront 2.x

I noticed your host is listed as "apps.OURDOMAIN.CO.NZ". Does that match your xml broker binding listed in IIS? The monitor will need to match what is listed on IIS, the alternative is to leave the hostname listed for your IIS server binding blank. Doing so should allow the server to accept any host value presented by the monitor post. Another setting to check is the "trust xml requests" policy located in the "computer" tab on the "policies" section of the app center manager. The policy should be set to "enabled". I find it curious your udp monitor also is not working. Is this still the case? The UDP monitor is simply looking for a response from UDP port 137 (netbios) and should be working as long as the port is open to the server; maybe a firewall is hindering communication?