Computer not detecting input signals from tablet

[AutoImport-DavideCon]

I’ve followed every instructions that you gave to others who had my same problem, like disabling firewall, uninstalling and re-installing the the app from the tablet and i tried to update the driver-uninput folder by replacing the one in /home/ with the most recent version that i downloaded from the GitHub repository (https://github.com/rfc2822/GfxTablet). I also double-checked if the IP address i put in the app was correct and the two devices are connected to the same network.
Please help!
Thank you in advance.

[rfc2822]

Please check the network traffic with tcpdump or Wireshark.