I decided to download grub-customizer to change some parameters of the interface when I boot the pc (I have a ubuntu 16.04 LTS dual-boot with windows 10), the first time I changed the menu items, colors, fonts and font size , then I reinstalled grub2 via boot-repair because I wanted to go back to the default settings and from that moment in practice every time I try to re-edit the settings with grub-customizer I can not see more grub2 at startup, it starts directly windows. From here on the command line reset the ownership of the boot on the grub bcdedit /set {bootmgr} path \EFI\ubuntu\grubx64.efi and at the next reboot I see again grub but if I log in to ubuntu when I restart again within directly in windows without seeing grub. What could be the problem?

EDIT: fixed following this Rod Smith answer.

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