Sorry to hear that problem.
Could you please tell me what type of USB stick are you using with uTrack24? (brand type etc)
Do you have a same problem with other USB sticks / USB drive as well?
The second problem reported by other users as well. We are working on the solution.
For this reason I would like to ask you to send me a detailed description to support_at_cymaticaudio_dot_com from your setup, other devices on the same network, router/switch type etc. then I can provide you a solution for this problem.