I can not reset the RB1100AHx4 factory. It has been hacked and I want to format it to get the settings right again

You need to do a netinstall procedure.
Basically attach the device directly to your PC.
Setting the ipv4 on the PC to specific settings.
Reset the router using the pinhole but in a different manner than for just a quick reset. I believe you wait until the light starts blinking and then is solid again............ cant remember its different for specific units.
Then you point the router to the lastest firmware which you should have put on your desktop etc..
Anyway thats very very roughly the process.

This is what I used as a guide....
https://wiki.mikrotik.com/wiki/Manual:Netinstall

I also watched this afterwards and not being in english really doesnt matter (at least to me).
https://www.youtube.com/watch?v=PS5DNCCrb94

Suggest you google your MT model and reboot, reset and netinstall for other readings.........