My Internet Box Plus started to block internet connection after each time it is restarted and I have to wait for several hours (quite often up to 10-12 hours) before it starts to work properly.
During that time it shows "Parental control restriction. You are not allowed to browse internet" for both Ethernet and WLAN connections. Needless to say parental control is switched off for all devices in settings.
Interestingly that at the same time it allows GUEST-WLAN connections without any restrcitions.
I tryied full reset of Internet Box and even updating of firmaware - nothing helped.