Not true. I have reached 20 coins several times and never been credited
im sorry i must have deleted my quote on this. i was paid by PTC last night 20coins. if only i can give a screenshot . ill have to do it on my android phone =) later. however if you havent been paid, my apologies bro. cointiply have a disclosure about PTC walls in the feedback section.
Cointiply is not responsible for that, but it can happen to some lucky guys like me that PTC does not work even when you reach the 20 coins limit