Wireguard - disable /enable - not possible enable

Hello, please ia have this problem:

HW: 750Gr3
SW: 7.6-7.7rc5 (same problem)
I am setting Wireguard ,all is running a few days , but after reboot in winbox Wireguard is not Running “R - is not in left column”
Disable , row wireguard1 is grey, enable row is black but not R in left column. I try in the new terminal , same problem. Wireguard is enabled but not running - R

any idea ?
Thank you
wg_not_R.png