Does it have to touch the DP for a valid trend change? Yes preferably it should but nothing is perfect.
Personally I use an offset stop loss of 5 pips on this time frame and when the bar comes within this close to a major DP, I regard that as "touching". ( an "int" DP needs to be completely touched)
The two setups on the 30 min chart, regardless if trend is up or down, to me are "floating", they are not at a resistance DP. ( Support becomes Resistance), as Steve says: Only trade when the situation is clear.
There are some very good setups on this chart, especially the ones from early January and if you had the stomach to hold on.
Good luck with your trading.