If you’re not comfortable with wall hops or rope climbs then to scale the workout first remove the kit/wt vest. If it’s still an issue then switch to 3x rope pull ups for each rope climb rep. (5 rope climbs = 15 rope pull ups). The rope pull up consists of doing a pull up and then a knees to chest below lowering back down.
To scale the wall hops more then do 2x burpee box jump overs for each wall hop.
The pinch hold is just standing still for as long as you can hold. As soon as your grip goes the time stops. Make sure to focus on rolling and stretching your forearms out after the training is done for today.