Try to install k9 protection but I can use insert the password to remove the block and see on porn. What way you know to not insert the password on porn blocker?
Easy. Write a complicated password on a paper (in case you need to write it twice)after that, burn the paper. Boom ,password gone. If you can reset it through email ,make a new mail, with the same procedure ,burn the passwords and no way to turn it off ever again.
Have some low-life drug addict scum take away your telephone cables in order to continue his disgusting life, it worked like a charm for me. 2 years free of internet and counting.