Content & Privacy Restrictions do not function properly

UPDATE: I managed to fix it on my own. I removed all the history data and it worked. :)

Hi, I've been using Content & Privacy Restrictions for some time and they worked well until I believe yesterday. Two of the sites that I've been blocking are news.google.com and youtube.com. Yesterday, I watched a youtube video using a third-party app. This app isn't directly showing the YT video, but uses it's own built-in player. Nowadays, even though I have both youtube and news.google.com blocked in all the various forms, I can access them on my Iphone. I deleted the 3rd party app, turned-off and -on the Restrictions, updated the system, turned-off and -on the phone. Sadly nothing works. I have distractions issues and without this blockade either I will be in a bad position in my life, or I will have to sell my phone. Please help.

PS: I must say, before apple pushed their Restriction settings, I used blocker-apps that worked wonderful. Apple disabled these over a year ago and provided a much poorer solution, that currently isn't even working. I am much dissatisfied. :/