How to enable internet access if blocked by router?

My dad disabled it by doing this steps



1. add a time schedule.

2. remove its gateway from its WAN

3. add a block all ports based on MAC Address .



I tried changing IP address but every 3-5 minutes it disables again and you have to change it every time it occurs.

Also, If you know how to get password and username to get router access that would be a better idea.How to enable internet access if blocked by router?
If you have physical access to the router you could always just reset it and then put all the same settings back in that he did originally but without the restrictions. Of course, that's a good way to convince your dad to do away with your internet entirely.