In Windows 11, with iniBuilds A350 v 1.2.5, when I update Navigraph from the EFB, I get a mementary “Simulation paused” message at 46.14, followed by a green “Navigraph Navdata Updated” message.
Make sure you have iniBuilds A350 v 1.2.5. This is likely an iniBuilds issue with Xbox, rather than a Navigraph data issue. You should post this issue in their forum.