Good Day All

its been years since i posted something, am a bit stuck on Something. i bought a GPS device from china and was given a Protocol document and i have written a TCP listening and hosted it on the server. i can use TCP test tools like "Hercules" and i was also given a Trace tool so that i can trace if any commands are sent on the tracker. they also have an app called "Any tracking" that can be downloaded in Playstore. i did install it and tested the device and i see its working on functions like flash light, sound(horn) . here is my TCP listener code and when i send a commands from my TCP tool , i get a response in my TCP listener but the device does not respond to the commands and i have attached the Protocol document

V44C and V24C new version protocol data sample.pdf

i have attached the code file (cs)