@venfam Great to hear it worked out for you!
Please also note that parental control works only when devices are connected to the pcWRT. There’s no filtering when kids are connected to your existing router.
It’s preferable to turn off the WiFi on your existing router to make it easier. Sometimes two WiFi signals cause RF interference with each other, and may degrade WiFi performance. If you do need two WiFi signals, make sure the channels don’t overlap (i.e., at least two channels apart).