Well first good looking fibs there SJ. The 52 pt you see there is actually 5.2 pips (forgot to change that part in the indicator label). With a 4 hour chart, you'll likely see very little change in the ATR unless you get out to using triple digit periods like 169 or something. If you put a 5 min or 15 min chart then change the ATR you'll start to see some changes in the Renko chart.
The period separators line up with the upper chart window and will not mean anything in the lower window since Renko is price and resistance without time factored in.
"remember the mayonaise jar...keep cool but don't freeze"