This website is not proof of what works what doesn't work. The purpose of Charts in Blog and Notebook is to discuss the point with some trading heuristics. The charts are not to give any certainty. As history doesn't repeat, it jumps.
The chart is just showing the pricing mechanism and to identify the possible entry zone, level to floor losses. That's what zero intelligence investing is all about.
Although Every support or resistance zones have a separate history of why price jumped or price unable to cross a level. Mostly it's because of the change in market breadth and money flow.
Plan your trades.